US1465651A - Scroll saw - Google Patents

Description

Aug. 2l, 1923. 1,465,65

c. A. MOBERG- S GROLL S AW Filed Dec. 5. 1921 2 Sheets-Sheet l v 1|l{| H 4llllllllllllllllll] 73 Y ri lz 7g 70 nlm Ilm scRoLL sAw Filed Dec. 5. 1921 2 Sheetssheet 2 Patented Aug. 21., 1923.

UNITED STATES CARL A. lIQBEBL 0l' CHICAGO, 1121.111018, .B88161703 T0 NORTH BBQTHEBS INC., l' HICLGO, ILLINOIS, A CORPORATION 0l? ILLDTOIS.

PATENT OFFICE.

SCBQLL SAW.

Application Sled December 5, 1981. Serial lo. 519,858.

ToaZZww-m tmay concem:

Be it known that I, CARI. A. Momo, a citizen of the United Stateresiding at 2932 North Saw er Avenue, hica 1n the 6 county of ook and State of Il inois, huye invented new and useful Improvements in Scroll Saws, of which the following is a specification.

This invention relates to improvements in scroll saws, and will be fully understood by reference to the followin specification and accompanying drawings, in which Figure 1 is a view in side elevation of a device embodying the features of m invention, Fig. 2 is a view in side elevation of the crosshead formin is a view cfg the device in front eleva-tion, Fig. 4 is a view taken as indicated by the line 4 of Fig. 1, and Fig. 5 is a view taken as indicated by the line 5 of Fig. 3.

As shown in the drawings, indicates a suitable support such as a 'table top or board, upon which the scroll saw is mounted. 11 indicates a cast base-plate, suitably fastened to the supporting surface 10, as by bolts 12. The base-plate 11 is provided with two upwardly projectindgsv sockets 13 adapted to receive the lower en of the round or rods 14. The rods 14 are held in the sockets 13 by means of. set-screws 15. Mounted on the upper ends of the posts 14 `is a flat circular work-supporting table 17. The underside of the table 17 is provided with two downwardly projecting sockets 18, adapted to receive the upper ends of the posts 14, which are held in place b means of the set-screws 19. The under si e of the work table 17 is also provided with a downwardly projecting boss or lug 20, rovided with a horizontally arranged c indrical opening adapted to .receive one en of a rod 21, as shown. The rod 21 is adjustably mounted in the lug 20 by means of the setscrew 22. The other end of the rod 21 is squared and enlarged, as indicated by 23. and such enlargement is rovided with a vertically arranged cylindrical hole adapted to receive a rod 24, which is adjustably' mounted within by means of the set-screw 25. The rod 24 is bent at right angles, at 26, to form a horizontal arm 27, which ex# tends over the work table 17.- The end of this arm 27 is forked, as indicated vby 28. The arm 2 7 `is bent slightly in a horizontal a part of the device, Fig. 3

the table in the usual manner.

plane, sothat the forked-end will lie substantially above the center of the work table 17.

Adjustably mounted, by means of the setf screws 50, on the posts 14, is a bridging member 51. The center of this bridging member is provided vwith a horizontally arranged bearing 52. the rods 14 is an H-shaped cross-bead 55, as shown in Fig. 2, the ends of the vertical parte of this cross-head being provided with oles ada ed to receive the rods 14, as shown. T is cross-head is provided with a horizontally arranged groove or slide 56. Attached to the upper lend of one of the vertical ends of the crs-head 55 is a boss or lug 60, rovided with a horizontally .arranged circular hole ada ted to receive the Slidably mounted on lower arm 67 of a U- aped saw frame.,

which supports, between its ends, a scroll saw blade 68, in the usual manner. The arm 67 is adjustably mounted in the lug 60 by means of a set-screw 69.

Means are provided for reciprocating the cross-head 55 upwardly the posts or guides 14. Such means' comrise a shat70 rotatably mounted in the aring 52 and provided at its outer end with a crank 71 and o rating handle72. The inner end of the s aft 70 is provided with another crank 73, on the end of which isa short pin 74 having its end provided with a roller 75, operating in the groove 56 in the cross-head. The end of the pin 74 is slightly enlarged as indicated by 78, in order to retain the roller 75 in lace.

It is obvious that rotation of the shaft 70, by means of the crank 71, will cause upward and downward reciprocation of the cross-head 55. The arm 67 of the sawsupporting frame 1s mounted in the part 60, so that the saw 68 will pass through a hole provided in the center of the work table 17.

t will be seen that upward and downward and downwardly on i table, to operate on any material laced on e arm 27 is arranged so that the saw blade 68 passes through the bifurcated end 28. This arm 27 serves to assist in holdin the work down on v,the table 17. The vertical rod 24 may' adjusted upwardly or downwardly by 14 are somewhat lon .means 'ofthe set-screw 25, to adapt the height of the arm 27 'to any desired thickness of work.

It will be noted that the posts or guides ger than necessa to accommodate the full length of trave of i the cross-'head 55. It will be noted also that posts 14, by means of the set-screws 50, in

'order to bring dierent parts of the blade 68 in operative relation lwith the table 17. By this construction it is possible to distribute the Wear on the blade 68 through substantially the entire length of the blade.

This feature is especially useful in a case where one or more teeth of the blade 68 become broken or mutilated. When this happens it is not necessary to renew the blade, l but by means of the set-screws 50, the bridging member 51 may be raised or lowered, thus changing the span of travel of'the cross-head, and accordingly changing the position of the blade 68 with respect to the 5 table 17.

Although I have shown a scroll saw adapted to be' operated by hand it is obvious, however, that without detracting from the spirit of this invention, the saw could be operatedby power if desired; and while I have shown and described certain embodi-` broadly as possible in 'view of the rior art.y

What I claim as new and desire to secure by Letters Patent, is:

A scroll saw corrprising a base plate, tw vertically arran e parallel posts supported by the base p ate, a work-supporting table mounted on the upper ends of said posts, i

a cross-head slidably mounted on said sts and carrying a saw frame, a saw lade mounted in thesaw frame and extending through a hole in the work-supporting table, and means for reciprocating the crosshead on said posts, said means comprising a bridging member adjustably mounted on said posts and provided with a bearn having rotatably mounted therein a sha tying at one end an operating crank and at the other end a crank cooperating with a, oove in the cross-head.

itness my hand and seal this 25th day .of November, 1921.

CARL A. MOBERG. [1.. 8.]

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