Патент USA US2131744код для вставки
Oct. 4, 1938. M. MAESER PRESS Filed Aug. 5, 1937 32/ 2,131,744 Patented Oct. 4, 1938 2,131,744 v i UNITED STATES PATENT OFFICE " PRESS Mieth MaeseriBeverly, Mass., assignor to United ‘ Shoe Machinery Corporation, Paterson, N. J ., a corporation of New Jersey 7 Application August 5, 9 Claims. This invention relates to presses and more par ticularly to presser members of the type utilized in clicking machines for applying pressure upon dies to force the latter through sheet material 5 in cutting articles from such sheet material. The 1937,“:seria1' No. 157,586 (01. 164—19) ' bers in the truss formation. Preferably, and as shown, the superstructure is composed of tubu lar steel members suitable for the purpose ber cause of their relatively high strength in tension and compression, and their great rigidity as a novel presser member is shown embodied in a column. Due to spaces between the tubular mem press of the type disclosed in United States Let bers of the superstructure, the presser member ters Patent No. 921,503, granted May 11, 1909, on may be readily seized by the hand of the oper ator no matter what the. position of the presser In a press of the type speci?ed, the presser ,member may be, thus facilitating substantially the operation of swinging the presser member member is movable laterally over a work support ing bed to any selected position over a die on the laterally into and out of position over a die on ' bed, and also toone side of the bed so that a the cutting bed. These and other important features of the in sheet of material, such as a tanned skin, may be readily placed on the bed and inspected prior to vention and novel combinations of parts will now any cutting operation thereon and so. that a die be described in detail in the speci?cation and or dies may be placed in a desired position on the then pointed out more particularly in the appende sheet material. To perform a cutting operation ed claims. In the drawing-— , the presser member is'swung into position 'over 20 the die and then, by tripping the usual clutch ' Fig. 1 is a perspective view of part of a click 20 mechanism, the presser member is caused to ing machine showing in the presser member one strike the die to force the latterthrough the embodiment of the invention; and sheet material. The presser member must be Fig. 2 is a vertical section taken along the line _ long'enough to reach practically all portions of II—II of Fig. 1. 25 the bed and strong enough to force the die In Fig. l ‘of the drawing, a presser member 4 through the material. It follows‘ that the presser of special construction is shown mounted rigidly an application'of Arthur Bates. ~ 10 - member must be‘ strongly constructed. At the - same time its Weight should be kept at a mini 3 35 mum‘tcon'sistent with the necessary strength‘, in order 'thatfthe work of the operator in swinging the presser. member may be minimized, thereby conservingthe operator’s energy for the far more important work. of inspecting the leather and ‘selecting and placing the dies. ' ' .' j ‘ It is an object of thisvinvention to provide an effective presser member of a simple and durable construction which will at the same time be rela tively light in weight and readily movable ‘into 40 and out of operative position over a die on the cutting bed. _ . . ' ,_ . To these ends, andin accordance with an im reference numeral 4. Pivoted at 16 in the ma chine frame is a trip lever l8 having a link con nection 20 to a clutch lever (not shown). Se cured to the front end of the trip lever I8 is a handle 22. This handle is conveniently used to position the presser member 4 'over a 'die on the 40 bed I4 andto swing the presser member away having a striking surface suitable to contact a die to force the latter through sheet material, in ,(not shown) and cause a pressure applying oper presser mem ber of cantilever construction comprisesa plate, combination with a superstructure in truss for mation secured to the plate to strengthen the same. It will be understood that the truss for 50 mation is designed to afford strength, su?icient for thepurpose while atthe same time making it possible to keep the weight of the presser mem ber at a minimum, due in part to the numerous open spaces in such a superstructure andin part ; 55 and‘down movement in bearings 8 and H) of a machine frame, part of which is shown at l2. Supported by the machine frame is a bed or ,cut- 1 ting block Ill, the upper surface of the latter being in a plane which is’ substantially parallel with the plane of the lower face of the presser mem: ber or beam indicated generally in Fig. 1 by the from the die after the latter has been forced through the Work piece, a downward movement of the same handle 22serving to trip the clutch portant feature of the invention, 45 upon‘ a post 6 supported for rotation and for up , to, the use of relatively slender, light-weight mem ation of the presser member 4, it being under stood in this connection that the post 6 is moved downwardly upon tripping the clutch to effect such movement of the presser member. Follow ing ‘a downward movement of the presser mem ber and post 6, these parts are immediately re turned‘ to initial position so that the presser member may be free to be swung to ‘one side of the die which has just been forced into the “ sheet material on the die block I4. For a more 2 2,131,744 complete description of a press of this type, ref side edges of plate 30 into the superstructure erence may be had to the Bates patent cited above. and thus to the post 6 and to the machine frame. The braced formation also resists forces tending to bend or displace the superstruture in direc tions crosswise of the pressure member 4. It will be observed, therefore, that in all parts of the superstructure the relationship of the struts Upon inspection of Figs. 1 and 2, it will be ob served that the presser member 4 comprises two plates. Of these, the upper is a steel plate 30 to which is secured an aluminum alloy plate 32 substantially co-extensive therewith and serv ing to provide a suitable striking surface to con tact and drive the dies through the sheet ma 10 terial being operated upon. The plate 30 is rela tively thin and is reinforced by interconnected ribs or ?anges 3i and 33 extending, respectively, crosswise and lengthwise of the plate 3!] and rigid therewith throughout their lengths. It is to be understood that the aluminum plate 32 is u not necessary in all cases since the striking sur faces of presser members of this type have long been made of cast iron. However, for the quality of lightness, it is preferred to use an aluminum 20 alloy plate of a suitable degree of hardness, more particularly when it is desired to avoid damage to the upwardly facing cutting edge of a die hav ing cutting edges on both upper and lower surfaces. ’ Secured rigidly to the upper face of the plate 30 is a superstructure of truss formation de signed to give the requisite strength to the presser member while at the same time retaining the advantage of lightness in the presser member. 30 This superstructure comprises a plurality of in terconnected trusses disposed side by side and extending substantially ‘the full length of the plate 36. As shown these trusses comprise three longitudinally extending tubular members 34, 36, 35 38, which are rigidly connected at their forward ends by welding to the upper surface of the plate 38 and also rigidly connected at their rear ends to a semicylindrical steel piece serving as a clamp member 40. The lower endv of the clamp 40 member M! is also welded to the plate 30 at the rear end of the latter. These tubular members 34, 36, 38, while rigidly connected at their front and rear ends to the plate 39, are so spaced throughout their intermediate portions with re spect to the plate 39 and so curved from front to rear that every part of each tubular member is subjected to compression in resisting the tend ency of the plate 39 to upward movement while pressure is being applied to a die located near the outer end 'of the presser member. 50 Secured to each of the tubular members 34 and 38 are a plurailty of struts 54, 56, 58 and 60 welded to each other and to the plate 30 and to one of said tubular members to provide a tri 55 angular truss construction to transmit either tension or compression, as the case may be at any given instant, in a pressure applying opera tion. As clearly indicated in Fig. 2, these struts are also hollow, tubular members. To further strengthen the superstructure the tubular mem bers 34, 3t; and 38 are joined by tubular mem bers 62, 64, ‘55, 68, serving as tie-rods, and ex tending crosswise between the tubular members to join the same into a rigidly welded structure. 65 The truss members or struts ltl, ‘l2, l4, 16 con nected to the tubular member 36 are vertically arranged, as indicated in Fig. 2, whereas the truss members 54, 56, 58 and 60 connected at their upper ends to the tubular members 34 and 70 38 are‘ inclined upwardly and inwardly toward each other, thus givinga braced effect to the superstructure due to the approach to a trian gular formation crosswise of the superstructure as clearly shown in Fig. 2. This braced arrange 75 ment is provided to, carry forces on the outer 01' or truss members to each other is triangular since a triangular truss formation is particularly serviceable to the attainment of great strength 10 and rigidity without undue weight. It is impor tant to note that no matter where force is ap plied to the beam 4, the force of the blow is transmitted to the post 6 and to the machine frame which are strong enough to absorb it. 15 An advantage of the new presser member or beam, perceived only after the construction and testing of the ?rst beam of its kind, resides in the ease with which it may be seized by the hand of the operator no matter what its position with 20 respect to the bed. The tubular construction therefore facilitates greatly the desired manipu lation of the beam, in contrast to the situation in prior constructions wherein it is necessary under most circumstances to reach for the trip ping handle at the front end of the beam even though it causes the operator to leave his usual position, or lose his stance, at the center of the front of the bed. Furthermore, the new beam does not cast the shadow of the old beams. The , result is that the work pieces on the cutting bed are better lighted to a quite noticeable extent. As shown most clearly in Fig. 1, there is a sec ond clamp member 80 for co-operation with the clamp member 40 in securing the presser arm 4 to the post 6, both clamp members 40 and 80 having openings at their lower ends for the arms of a U-shaped clamp 82 utilized to bolt the clamping members 40 andv 8B securely together. At their upper ends the clamping members 40 and 40 80 are secured together by bolts one of which is shown at 84. Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is: 1. In a clicking machine, a work support, a post, and a cantilever presser member supported by said post, said presser member comprising a striking plate and a strengthening superstructure of tubular members in truss formation rigidly se cured to said plate. 2. In a clicking machine, a work support, a post, and a cantilever presser member supported by said post, said presser member comprising a relatively thin steel plate, an aluminum alloy plate secured to the under side of said steel plate to serve as a striking plate, and a strengthening structure in truss formation rigidly secured to the upper side of said steel plate. 3. A presser member for use in a clicking ma (h) chine comprising a steel plate, a semi-cylindrical piece of steel welded to one end of the steel plate in vertical relation thereto to serve as a clamping member, and a strengthening structure in truss formation rigidly secured to said steel plate and to said clamping member. 4. A presser member for use in a clicking ma chine comprising a striking plate and a plurality of side-by-side interconnected trusses rigidly con nected to said plate at all points of contact there 70 with and extending longitudinally thereof. 5. A presser member for use in a clicking ma chine comprising a striking plate and a super structure in truss formation rigidly secured to said plate, said superstructure comprising a plurality 75 3 2,131,744 of steel members rigidly secured at their ends to said plate and extending lengthwise of theiplate in spaced relation thereto, and a triangular truss rigid with each of said lengthwise members and with said plate in an'organization wherein said lengthwise members are rigidly connected by cross ties. 6. A presser member for use in a clicking ma chine comprising a striking plate, a semi-cylindri 10 cal piece of steel welded to one end of the steel plate in Vertical relation thereto to serve as a clamping member, and a superstructure in truss formation rigidly secured to said‘plate and to said clamping member, said superstructure comprising 15 tubular members rigidly secured to said plate at their front ends and extending lengthwise of the “20 ends to said striking plate and extending in spaced relation to said plate and lengthwise thereof, to— gether with triangularly related struts or truss members of tubular formation rigid with each ‘ other and with said striking plate and serving to 5 connect the three tubular members rigidly with said plate, and tubular cross ties rigidly connect ing said threetubular members. 8. In a clicking machine, a work support, a. post and a presser member, said presser member com 10 prising a striking plate, a plurality of tubular re inforcing members rigidly secured to the upper surface of the plate adjacent to the forward end thereof and converging upwardly and rearwardly, and means connecting the rearward end of the plate and the upper ends of said members to the 15 plate in an upward curve to said clamping mem post. ber, and a plurality of triangular trusses rigid with said longitudinally extending tubular mem a presser plate connected at one end to the post bers and with said plate in an organization where in said longitudinally extending tubular members are rigidly connected by cross ties. ' 7. A presser member for use in clickingma chines comprising a striking plate and a strength ening superstructure rigidly secured to said plate, 9. In a clicking machine, awork support, a post, and extending forwardly over the surface of the 20 work support, a plurality of tubular reinforcing members rigidly secured to the plate adjacent to its forward end and converging upwardly and rearwardly toward the post, and means connect ing the upper ends of said members with the post. 25 said superstructure comprising three I tubular members, rigidly secured at their front and rear MIETH MAESER.