Патент USA US2406979код для вставки
Sept. 3, 1946. _ J. F. WOLFE CIRCULAR SAW AND DADO COVER Filled Sept, 20, 1945 3 sheets-sheets Inventor; J07” Mama ‘ 2,400,979 Patented Sept. 3, 71946 UNITED STATES‘ PATENT OFFICE 2,406,979 CIRCULAR SAW AND DADO COVER John F. Wolfe, Lapeer, Mich. - Application September 20, 1943, Serial No. 503,133 1 Claim. (Cl. 143-159) 1 2 As illustrated to advantage in Figures 2 and 3 The present invention relates to new and useful improvements in covers for circular saws and of the drawings, the guide 1 comprises pairs of upper and lower transverse bars vll between which pairs of upper and lower longitudinal bars 5 ex tend. Thus, what may be considered a vertical dados, and has for ‘its primary object to provide, in a manner as hereinafter set forth, novel means for protecting tools of this character from the elements, in addition to protecting workmen passage through the guide I is provided, which passage slidably accommodates a hanger 6. against injury. The hanger 6 is in the form of a substantially I ?at tube 1 of suitable material having in its op Another very important object of the invention is to provide a cover of the aforementioned char posed side walls vertically spaced openings 8. A acter which is free or independent of the tool or 10 pin 9 is insertable selectively in the openings 8 table and which, through the medium of unique supporting means, may be expeditiously raised to permit access to be had to the saw or dado. Still another important object of the invention is to provide a cover of the character set forth for saws and dados which will prevent sawdust from being thrown into the air to be inhaled by the sawyer and other workmen. A still further important object of the inven tion is to provide a circular saw or dado cover which may be expeditiously adjusted vertically to meet various conditions. in the upper portion of the hanger 6 for suspend ing said hanger in the guide I. Other objects of the invention are to provide forth which will be comparatively simple in con struction, strong, durable, highly ef?cient and re liable in use, compact, and which may be manu factured at low cost. All of the foregoing and still further objects and advantages of the invention will become ap parent from a study of the following speci?ca tion, taken in connection with the accompanying drawings, wherein like characters of reference designate corresponding parts throughout the ' Figure 1 is a view in side elevation of a cover constructed in accordance with the present in vention. Figure 2 is a view in vertical section through the device, taken substantially on the line 2-2 of Figure 1. or hood for the reception of a circular saw or dado ll mounted for operation on a table l2. . a circular saw or dado cover of the character set several views, and wherein: As best seen in Figure 2 of the drawings, the pin 9 is operable 15 in the guide I and engageable with the bars 5 thereof. Thus, the pin 9 positively limits the vertical sliding movement of the hanger 6 in the guide I, in addition to suspending said hanger therein. Suspended from the lower end of the hanger 6 is a vertically adjustable and slidable 20 guard Ill. The guard i0 is in the form of a shield Rising from the guard H1 is a flat shank l3 which 25 is slidable in the lower portion of the hanger 6. Toward this end, the shank l3 has formed there in a vertical slot M for communication with the openings 8. The slot lll'accommodates a pin [5 which is insertable, selectively in the openings 8 30 in the lower portion of the hanger 6 for suspend ing the guard l0 therefrom for vertical sliding movement. Above the slot Hi, the shank i3 is further provided with an opening it for regis try with the openings 8 for receiving the pin l5 when vertical sliding movement of the guard I0 is not desired. The pins 9 and I5 are slightly tapered to permit them to be tightly inserted in the openings 8. It is thought that the operation of the device 40 will be readily apparent from a consideration of the foregoing. Briefly, the guard l0 is adapted , to be suspended by gravity over the tool II in a manner to cover and protect same. If desired, the supporting structure for the guard in may Figure 3 is a bottom plan view, the end portion of the guide being broken away. Figure 4 is a view in side elevation of the upper ‘ portion of the guard. 45 be expeditiously adjusted to permit said guard. to rest on the table l2. The guard may be se Figure 5 is a view principally in vertical sec cured in this position against raising and ex tion, showing the device mounted for use out posing the saw by inserting the pin 9 below the guide I and engaging the pin I5 in the open of doors. Referring now to the drawings in detail, it will 50 ing 16.’ However, with the elements in the po be seen that reference numeral l designates gen sition of Figure 2 of the drawings, the guard erally a substantially rectangular, skeletonized, box-like guide of suitable material, preferably Ill may be expeditiously raised to permit access to be had to the circular saw or dado ll. Up metal. On an indoor installation, the guide l ward movement of the guard III in the hanger is suspended from a ceiling 2 through the medium 55 II is governed by the length of the slot l4 and. of hangers 3. 3 2,406,979 vertical movement of said hanger 6 in the guide I I is positively limited by the pin 9. ‘In Figure 5 of the drawings, the device is shown in use for out-door work. When thus used, a supporting structure I8 is erected adja cent the side of the table H) which is remote from the sawyer. The structure It? includes a pair of posts 20, from the upper end portions of which arms 2| project horizontally over the ta transverse bars and forming therewith a verti cal passage in said guide, means for suspending the guide from a support, a substantially ?at tubular hanger slidably disposed in the passage and provided with vertically spaced openings therein, a pin insertable in openings in said hanger above and below the lower pair of lon gitudinal bars, selectively, said pin when inserted ble l9. Suitable braces or struts 22 are provided 10 in openings above said lower pair of longitudinal for the posts 29 and the arms 2|. The guide I is suspended from the free end portions of the arms 2| over the saw or dado 23 through the medium of hangers 24. In other respects this embodiment of the invention is substantially sim ilar in construction and operation to that illus trated in Figures 1 to 4, inclusive, of the draw ings. It is believed that the many advantages of a circular saw and dado cover constructed in ac- " cordance with the present invention will be read ily understood, and although preferred embodi ments of the device are as illustrated and de scribed, it is to be understood that further changes and modi?cations in the details of con struction may be resorted to which will fall with in the scope of the invention as claimed. What is claimed is: bars suspending said hanger from said lower pair of bars for adjustment of the hanger upwardly in said passage and being adapted to coact with the upper pair of longitudinal bars to limit up ward adjustment of said hanger, said pin when inserted in openings below the lower pair of lon gitudinal bars coacting with said lower pair of bars to ‘prevent upward adjustment of the hang er, a guard, a substantially ?at shank rising from said guard and vertically adjustable slidably in the lower part of the hanger, said shank hav ing an opening and a vertical slot therein verti cally spaced apart and adapted to be registered, respectively, with openings in said hanger, and , a second pin insertable selectively in the open ing and slot in the shank and in openings in the hanger with which said opening and slot in the shank may be registered to thereby connect the shank to the hanger against vertical move A circular saw cover comprising a skeleton box ment relative thereto or for vertical slidable ad like guide including upper and lower transverse bars, and vertically spaced pairs of upper and 30 justment in said hanger. lower longitudinal bars extending between the JOHN F. WOLFE.