Патент USA US2118379код для вставки
May 24, 1938. j H. A. GREEN ï DAVENPORTCLAMP ` ~ original Filed Märch 13, 1955 2,118,379 ` 5 sheets-sheet l .l ilu \ HARRY A. @Rf-:5N IN VEN TOR.v A TTORNEYS. “tay 24, `i938. ' , ÈH, AD GREEN > DAVENPORT- CLAMP - 2,118,379 I . Original Filed March 15, 1955 5 Sheets-Sheet 2 TIG.; I 2.-' HARRY A. ¿FREE/v INVEN TOR. BY ATTORNEYS. v May 24, 1938. _ _ H. A. GREEN 1 2’M89379 DAVENPORT CLAMP' l ‘original Filed Maron 15, 1935 s sheets-sheet s HARRY A. GREEN ' . l BY JNVENTOR. ~ ÁO A'TToRNEYS. 2,118,379 Patented May 24, 1938 UNITED STATES PATENT ori-‘ICE 2,118,379 DAVENPORT CLAMP Harry A. Green, Portland, Oreg. Application March 13, 1935, serial No. 10,848 Renewed November 3, 1937 9 Claims. (Cl. 1114-291) This invention relates to improvements lin curved back sections and outwardly diverging arm rest sections. , machines for assembling furniture and is par I attain the foregoing objects by providing a ticularly adapted for uniting and securely clamp ing together the various structural elements of machine comprising two» frame sections, one of said sections lying- in a horizontal plane, the 15r davenports. Heretofore, in the construction of furniture of other in a substantially upright plane, and both this character it was necessarir to assemble the structural elements thereof into individual units and then assemble these various units into a 10 completed piece . of furniture. This sort of progressive assembly Work required the use of numerous hand-clamps vnot only in the assem bling of each individual element or unit but also in the assembling of the individual units into 15 an entire unit. The inaccuracies and inefii ciencies of such methods of clamping furniture' together in the assembly operation are obvious and particularly since it is impossible by such hand-clamping methods to apply clamping force 20 equally and simultaneously on all of the parts of the frame in order that all the doweled por tions will be forced together to the fullest exn tent and the alignment and desired form of frame work maintained. Moreover, such hand 25 clamping by means of various auxiliary clamping devices also increases the time of manufacture, and thereby increases the cost of production. Accordingly, therefore, the principal object of my invention is to provide a machine adapted to .3,0 receive a completely assembled davenport with the various parts thereof loosely joined together, and adapted thereafter, by a single operation on the part of the operator to exert clamping force equally and simultaneously to all the parts to 3,5 securely unite them to their limits of abutment intov finally assembled form. . Another object of the invention is the provisio of means for automatically locking the machine in its operative clamping position to securely 4:0y hold the various elements in their united posi tions to receive reinforcing members such as blocks, braces, and the like. Also, during the application of these various reinforcing elements the previously united structural elements of the davenport are permitted to dry to thereby in sure a more permanent union between all of the elements. . ' of said sections united with each other along their adjacent edges. I also provide a plurality of adjustably mounted worlc‘ abutments, and a plurality of individually adjustable clamping 10 elements which are adapted to be moved simulta neously toward the work being dealt with. Said abutments and clamping elements being pro vided on both the upright and horizontal frame members. , 15 These and other objects will appear as my in~ vention is more fully hereinafter described in the following specification, illustrated in the ac companying drawings and ñnally pointed out in the appended claims. 20 In the drawings: Figure 1 is a top plan view of my new and improved machine, with parts removed for con venience of illustration, and showing a portion of a davenport frame in operative engagement 25 with the machine. Figure 2 is a front elevation of the machine showing the frame work of the back rest of the davenport in operative engagement with the up right frame members of the machine. . 30 Figure 3 is an'end elevation of Figure 1, look ing in the direction of the arrow in Figure 1. Figure 4 is a detailed top plan view of one of the adjustable and movable clamping mem bers. f 35 Figure 5 is a longitudinal sectional View through Figure 4. Figure 6 is an end elevation of Figure 5 as viewed from the left hand side. Referring now more particularly to the draw- 40 ings, my invention consists of a horizontal frame member generally indicated at l, which is sup ported at its front side by suitable legs 2 and 3 provided With casters 4. This frame will be hereinafter referred to as the horizontal frame. 45 Supporting the rear edge of the horizontal frame is an upright frame generally indicated at 5 which consists of vertical members 6 and 1, A still further object of the invention is the provision of a machine of this character where and a transverse member 8. The rear corners of the horizontal frame are secured to the ver- 50 in the clamping members and abutments are all tical members 6 and 1 of the upright frame by any suitable means, such, for instance, as bolts, individually adjustable and thus adapted to op erate upon davenport frames of various sizes and which may vary from the rectangular and 55A which are provided with rearwardly inclined or rivetsl or the like. The lowermost ends of the end members 6 and 'l are secured as at 9 to a transverse member Ill which extends from the 55` 2,118,379 legs 3 and 4 rearwardly beyond the point of at tachment of the end members 6 and 1 and ter minates as at II in connection with upright braces I2, which at their uppermost ends are Cl secured to the transverse member 8 of the up right frame for stabilizing the same. 'I'hus it and is also pivotally connected as at 39 with a pair of parallel links dll. These links extend from the collar 31 toward the actuating shafts and are operatively connected therewith by means of arms «il carried by collars 4Ia which are secured to the shafts by any approved means, will be seen that I provide a substantial and such as set screws, or the like, not shown. rigid structure consisting of a horizontal frame shafts shown in Figures 4 and 5 may represent and an upright frame. any one of the shafts I3, I1, I8 and 22. The upright frame may 10 be slightly inclined rearwardly to receive, in proper working relation, the correspondingly in The The links are pivotally connected as at 42 to the 10 lower ends ofthe arms 4I so that rotation clined back rest of a davenport, as shown in Y of the actuating shaft will cause the platform to move in either direction toward or away from the work being dealt with and which work rests upon the tops of the channel members which 15 tional manner. form the supporting tracks. The relation of the Figures 2 and 3 and which consists of upright members I2a and transverse members 12b which 15 are doweled and glued together in the conven 25 30 35 40 45 50 55 60 Extending full length of the upright frame is platform to the actuating shaft may be adjusted a shaft I3 which is rotatably mounted at its ends in suitable bearings I4 which are mounted to- the end members 6 and 1. On this shaft I mount a beveled gear I'5 Yin operative engagement with by means of the threaded shaft 34 which when rotated in either direction will advance or re tard the platform with respect to its support. 20 Upon the upper surface of the platform I pro a companion gear I6 which is secured to one Ívide any suitable form of clamping member end of a shaft I1 which is rotatably mounted which may be in the form of an angle bar as within the upright frame and disposed at right indicated at 43. This abutment is movable with angles to the shaft I3. A similar shaft I8A ex the platform and engages under pressure with 25 tends full length of the horizontal frame and is the work being dealt with as the actuating shaft journaled in the ends thereof by suitable bear is rotated. Within the frame 25, I provide a sta ings I9. This shaft is alsov provided with a tionary abutment 43A which is identical with beveled gear 26 cooperatively engaging with a the movable clamping members except that it companion gear 2I which is secured to the end is not connected with an actuating shaft for lon 30 of a transverse shaft 22' which is rotatably gitudinal movement inthe frame but instead is mounted Within the horizontal frame and dis adjustable lengthwise of the frame torform a posed at right angles to the shaft I8. Y Both of limit stop for the work. The platforms which said shafts I3 and I8 extend entirely through are slidably mounted within the frames 26 and the end members of the machine and are op 21 are operatively connected with the shafts I3 eratively interconnected by means of links 23 and I1 by means of the links 4D, arms 4I and which are actuated by a handle 24, whose one collars Ma, as aforesaid. end is secured to the shaft I8. Thus it will be In addition to the abutments and clamping seen that actuating the handle from one posi membersV above described I also provide a ñxed tion to another, such for instance, as fro-m the abutment 44 arranged transversely of the hori 40 full line position to the dotted line position shown zontal Vframe and secured thereto by any ap in Figure 3, will cause both of said shafts to proved means. This abutment may be in the rotate, and also cause the transverse shafts I3 form of an angle bar having spaced adjustable and 22 to rotate. Within the upright frame I abutments .45 threadedly mounted thereon. securely mount a plurality «of supplemental Along the rear edge ofthe horizontal frame I 445 frames generally indicated at `25,726 and 21. also provide ñxed abutments 46 likewise provided Each of said frames consists of a pair of par with adjustable abutments 41. Within the frame allel channel members arranged face to face 25, I provide an adjustable abutment 41a to form tracks for the adjustment or movement mounted to a support 41h which is carried by of the abutments or clamping members therein. the transverse members lä'ì’c of the frame 25. 50 The horizontal frame is likewise provided with At the right-hand side of the horizontal frame supplemental frame members which are general I provide another supplemental frame indicated ly indicated at 28, 29 and 30. VInasmuch as these at 48 within which one of the platforms is slid various members are substantially identical with ably mounted and operatively connected to the each other in construction, a description of one shaft 22. This platform is provided with a will suiñce for all. As best illustrated in Figures clamping element 49 having adjustable abut 4 to 6 inclusive, the movable clamping members _ments 50 threadedly mounted thereon. consist of a platform 3| which constitutes one On the platforms which are slidably mounted of the work rests andY whose upper surface lies Within the frames 28 and 36 in the horizontal flush with the top surface of the channel mem frame I pro-vide upstanding clamping members` bers so that a smooth surface is presented across 5I provided with adjustable abutments 52, which theY tops of the channels and the platform. The end walls of the platform extend downwardly as at 32 and outwardly as at'33. The portions 65 k33 acting as a sliding support for the platform, are adapted to bear against the outer ends of the arms of the davenport frame, as best shown in Figure 3. are adapted to move from end to end in the di rection of the length of the channel members. Extending entirely through the downwardly turned walls 32 is a threaded shaft 34 which is 70 rotatably mounted therein and held in place at one of its ends by a nut 35, and at its opposite end by any approved form of actuating collar For accommodating work of various heights 65 the entire frame 21, in the vertical frame, is slid able vertically in the channel membersrat Vboth of its ends. For convenience in adjusting the frame 21 to various heights I provide a sc_rew shaft 21a whichV is secured as at'21h'to one side of the frame 21. The opposite end of the screw Threadedly mounted upon the shaft extends through the transverse member 8 and is provided with a nut 21o, which, when shaft 34 is an internally threaded collar 31 which is secured to the underside of the platform 3'I, rotated will raise or lower the frame 21. When an adjustment is t'o‘be made vthe setscrew in the or handle 36. 2,118,379 collar Ma. is ñrst loosened» so that the links 40 and their connection to theshaft I'I are free to 3 tions, a-work clamping member-secured to each work rest, Yadjustable abutments opposing said work rests, .and a single operating means con nected with all said work clamping ymembers and which are to be united in the assembling of the ' adapted to operate the same simultaneously. 3. A davenport clamp comprising. two frame completed frame, are ñrst provided with drilled sections secured together at one side, one of said holes in certain of the members and dowel pins in the companion members; the dowels'being sections lying in a horizontal plane and the other adapted to ñrmly engage within the’drilled holes, in a vertical‘plane, both of said sections being joined together along the rear edge of the hori 10 all in accordance with the usual practice in the zontal frame, spaced, independently adjustable construction of furniture. In Vpreparing furni move The along various thestructural shaft.: elements » of davenports l - ture frame work for use with my invention, these various structural elements are first joined to gether loosely, i. e., they are’ joined together with 15 sufficient hand pressure so that the entire lunit may be lifted from the assembly bench 'and placed upon the horizontal frame and work rests of my machine with certain structural elements bear ing against the ñXed abutments on the machine. 20 Following this, the operator of the machine presses downwardly upon the handle 24 to simul taneously actuate all of the shafts I3, I'I, I8 and 22, which will move all of the clamping members against the various structural elementsl of the davenport in opposing directions,.so that all of the elements will be forced together to their abso lute limit of abutment. Rotation of shaft I8 will drawthe clamping elements 5I and 43 against the front of the davenport structure, and rota 30 tion of shaft 22 will push the abutments 50 against the. end of the davenport. Rotation of the shaft I3 draws clamping element 43, in the vertical frame, against the transverse member I2?) of the davenport structure and rotation >of shaft Il' 35 draws the clamping element'in frame 21 against the end of the davenport structure.' With the actuating handle thus in its down position it will remain locked in this position by reason'of vthe relation of the links 23 to the shafts VI3 and I8 The turning of the shafts moves the Work rests and abutments, the ñnal 40 and to the handle. adjustments of the abutments against the work being made by rotating the screws. Although I have shown hand actuating means 45 for rotating the actuating shafts it is to be under stood that automatic means may be used which may be either in the form of an air actuated lever, or an electrically actuated lever, or I may choose to connect the actuating handle with a 50 foot pedal within convenient reach of the operator. While I have shown a particular form of ern bodiment of my invention, I am aware that many minor changes therein will readily suggest them 55 selves to others skilled in the art without depart ing from the spirit and scope of the invention. What I claim as new and desire to protect by Letters Patent isz 1, A davenport clamp comprising, two frame 60 sections, one of said sections lying in a horizontal plane and the other upright, spaced, independ ently adjustable work rests provided on each of said frame sections, a work clamping member se cured to each work rest, adjustable abutments 65 opposing said work rests, and operating means connected with said work rests for simultaneously advancing them toward their respective. abut ments. 2. A davenport clamp comprising two frame 70 sections secured together at one side, one of said sections lying in a horizontal plane and the other in a verticalY plane, both of said sections being joined together along the rear edge of the hori zontal frame, spaced, independently adjustable 75 work rests provided on each of said frame sec work rests provided on each of said frame sec tions, a work clamping member secured to each work rest, adjustable abutments opposing said Workrests, operating means connected with all 515 of said Work clamping members and adapted to operate the same simultaneously, and means for temporarily locking said operating means in posi tion when the work clamping members have been i20 moved into active position. 4. A davenport clamp comprising, two frame sections, one of said sections lying in a horizontal plane and the other in a vertical plane, both of said sections being joined together along the rear edge of the horizontal frame, spaced independ ently adjustable work rests provided on the op posite ends and one side of said horizontal frame section, said work rests being provided with work clamping members and adapted to engage oppo site ends and one side of the work, an adjustable. abutment provided at one end of said upright frame section, a work rest comprising a work clamping member provided on the opposite end of .said uprightframe, said abutment and work clamping member adapted to engage both ends of the upper portion of the work, an intermedi ate and adjustable work clamping member pro vided on said upright frame section for engaging the top edge of the work, means for adjusting said clamping members relatively to the work, operating means connected with all of said work clamping members and adapted to operate the same simultaneously. 5. A davenport clamp comprising two frame sections, one of said sections lying in a hori 45 zontal plane and the other in a vertical plane, both of said sections being joined together along the rear edge of the horizontal frame, spaced, independently adjustable work rests provided on the opposite ends and one side of said horizontal 50 frame section, said work rests adapted to engage opposite ends and one side of the work, certain of said work clamping members provided with upstanding abutments, said upright frame section provided with a work rest at one end and an 65 abutment at the opposite end, said last mentioned work rest being adjustable relatively to the work, an adjustable work clamping member provided on the said upright frame section for engaging the top edge of the work, operating means connected 60 with all of said work clamping members and adapted to operate the same simultaneously, and means for temporarily locking said operating means in position when the work clamping mem bers have been moved into active position. 165 6. A davenport clamp comprising, two frame sections, one of said sections lying in a hori zontal plane and the other in a vertical plane, both of said sections being joined together along the rear edge of the horizontal frame, work rests 70 provided on the opposite ends and one side of said horizontal frame section, said work rests adapted to engage opposite ends and one side of the work, and one of said work rests compris ing a work clamping member operable to eifect 75 4 2,118,379 a clamping action on the work, an adjustable abutment provided at one end of said upright frame section, and a work clamping member pro vided on the opposite end of said upright frame, an intermediate and adjustable work clamping member provided on said upright frame section for engaging the top edge of the work, means for adjusting all of said clamping members re1atively to the work, operating means connected provided on each of said frame sections, a worl; clamping member secured to each Work rest, said Work rests slidably mounted upon guide elements carried by the frame sections, respectively, longitudinally andV transversely arranged rotat with all of said Work clamping members and able shafts journaled in said frame sections, re adapted to operate the same simultaneously, and means for temporarily locking said operating spectively, »gears `connecting said longitudinal and transverse shafts, respectively, operating arms means in position when the work clamping mem bers have been moved into active position. 15 sections, >one ofsaid sections lying in a hori zontal plane and 1the other in a vertical plane, both of said sections being joined together along the rear edge ofl the horizontal frame, Work rests 7. A davenport clamp comprising, two frame sections, one of said sections lying in a hori zontal plane and the other in a vertical plane, both of said sections being joined together along the rear edge of the horizontal frame, spaced 20 apart and adjustable Work rests provided on 'the opposite ends and one side of said horizontal frame section, said Work rests adapted to engage opposite ends and one side of the Work, and one of said work rests comprising a work clamping 25 member operable to elîect a clamping action on the Work, certain of said work clamping mem bers provided with upstanding abutments, said upright frame section provided with a Work rest, said last mentioned work rest being adjustable 30 relatively to the work, an adjustable abutment provided at one end of said upright frame, an adjustable Work clamping member provided on said upright frame section for engaging the top edge of the work, operating means connected with all of said work clamping members and adapted to operate the same simultaneously, and means for temporarily locking said operating means in position when the work clamping mem bers have been moved into active position. 8. In a davenport clampI comprising, two frame 10 carried by said shafts, links adjustably intercon necting said arms >and said work rests respective ly, and means for rotating said shafts simulta 15 neously and thereby forcing said clamping ele ments simultaneously upon the Work. 9. In a davenport clamp, two frame sections, one of said sections lying in a horizontal plane and the other in a vertical plane, both ofl said sections being joined together along the rear 2.0 edge of the horizontal frame, spaced, independ ently adjustable work rests provided V,on each of ' said frame sections, a Work clamping member se cured to each work rest, means for adjusting Vsaid work rests and said Work clamping elements 25 relatively tothe work, said work rests slidably mounted >upon guide elements carried by the frame sections, respectively, Vadjusting screws threaded in said clamping members, longitudinal 30 ly and transversely arrangedrotatable shafts journaled in said frame sections, respectively, gears connecting said longitudinal and transverse shafts, respectively, operating arms carried Yby said shafts, links connecting said arms and said adjusting screws, respectively, and means for ro tating said shafts simultaneously and thereby forcing said clamping elements simultaneously upon the Work. HARRY A. GREEN.