US2012201A

US2012201A - Hand saw

Info

Publication number: US2012201A
Application number: US739029A
Authority: US
Inventors: Okros Dezso
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-08-08
Filing date: 1934-08-08
Publication date: 1935-08-20
Anticipated expiration: 1952-08-20

Description

Aug. 20, 1935. I D OKRQS 2,012,201

I HAND SAW- Filed Aug. 8, 1954 Patented Aug. 20, 1935 HAND SAW r e Dezso 0kros,- Regina, Saskatchewan, Canada Application August 8, 1934, Serial No. 739Q029 1 Claim." (01. 145 34) e e 'dle adjusted at substantially with respect to This invention relates to certain new and useful improvements in hand'saws of the'removableblade type employing a U-shaped frame.

The primary'object of this invention is to provide a ,hand saw of the above mentioned character having a handle capable of being angularly adjusted in'a vertical and horizontal plane;

A further object-ofthis invention is to provide a saw of the above mentioned character comprising-a handle having means for locking the han-' dl'ewi'th respect to the saw in adjusted position.

A further object'of this invention is to provide a'hand saw including a U-shaped frame having one of the legs thereof adjustable whereby different sizes of blades may be employed and the blade may be stretched to different desired tension.

,A' still further object of this invention is to provide a saw of the above mentioned character having one of the blade holding blocks forming a securing means for the handle whereby the handle may be adjusted for the simultaneous tensioning of the saw blade.

7 A still further object of this invention is to provide a U-shaped hand saw having novelly constructed blade holding blocks to preventacciden- 1 tal rotation of the blade.

Other objects and advantages of the invention will become apparent during the course of the following description, forming a part of this specification and taken with the drawing, wherein,

Figure 1 is a side elevational view of the hand Figure 4 is a vertical cross-sectional view taken on line 4-4 of Figure 1, looking in the direction of the arrows illustrating the joint or connection between adjustable handle and leg of the saw,

greatly enlarged for the purpose of disclosing details of construction;

Figure 5 is a transverse cross-sectional .view taken on line 55 of Figure 1, looking in the direction of the arrows, illustrating the locking connection for the adjustable handle and showing .the locking tongue in position for normal use;

Figure 6 is a similar viewillustrating the han- I Figure '7 is anenlarged vertical view of the handle, showing the same removed the .U-shaped saw frame;

side elevational from the U-shaped sawframe and illustrated in cross section to more clearly illustrate the joint or connection between the two-parts forming the handle; and Figure 8 is an'enlarged fragmentary view of v the handle illustrating a portion thereof in cross-. section to more clearlydisclose the form of con- .'erence' characters will be employed to designate like parts throughoutthe same, the reference character it will generally be employed to des-' ignate a frame bar of a hand saw having one end provided with an angular extension H and the opposite end toothed as at 2. Slidably secured upon the free end of the frame bar I!) is a leg i3 having an opening min the form of a slot extending angularly through the leg I3 so a clamping action will occur when the leg 13 is' drawn toward the angular extension H.

Formed in the free end of the angular extension H is a conicalopening 15 adapted to'receiv'e a correspondingly shaped plug 16 having one end squared as at H andrbifurcated as at 18 while the opposite end is screw threaded as at 1 19 for receiving the wing nut 20. It will be noted 1 that the block 81 is slotted vertically and horizontally for receiving a saw blade 2! adapted to be held in place by a, pin 22 extending through the slot l8 and through an aperture formed in the blade 2 l tion of the leg l3 adjacent the bottom thereof is provided withan annular recess 25.-

The handle comprises a frame portion 25 on which is formed integral a fluted conical boss 1 2! surrounded by an annular projection 28. The fluted conical boss 21 is adapted to be received within the fluted conical opening 24 and the annular projection 28 is adapted to be received 5 within-the, recess 25 formed in the leg [3 of the saw frame. The handle also includes a handthe handle frame portion 26 by hinge pins Stand 3!, and the free ends of the hand-grip 29 are flattened as at 32 and 33 and are provided with ENT OFFICE v The lower end of the blade i3 is provided with I an annular boss v23 having a conical opening therein provided with ribs or flutes 24 and a porv grip portion '29 which is hingedly connected to p circular recesses for receiving the flattened end portions 34 and 35 of the handle frame portion 26, whereby the

complementary faces

32 and 34 also 33 and 35 will swing in a horizontal plane with respect to each other about the pivot pins 39 and 3!, the pivot pin 3| is provided with a tongue 36 rigidly secured thereto and adapted to move with the grip 29 so that the tongue 36 may be received in similarly shaped depressions 3"! formed in a circular portion 38 of the handle frame 29. Extending through the fluted boss 21 is an opening, squared as at 39 for a portion of its length terminating in a circular portion 49 whereby the squared end 4! of the saw blade the blade 2| may be received therein and held by means of a transverse pin 41. It will be readily noted that tightening upon the wing nut 44 to turn the same down upon the screw threaded portion 43 of the blade holding block 45 will simultaneously tighten the handle frame 26 and also place the blade 2| under tension.

If it is desired to adjust the handle grip 29 with respect to the saw frame In, the screw 39 may beloosened from the tongue 36 to move out of the central opening 31 and move into one of the lateral openings shown in Figure 6. Should it be desired to adjust the handle grip 29 axially with respect to the saw blade 2|, the wing nut 44 may be loosened and the hand grip 29 rotated or turned to an adjusted position whereby the flutes 2? will be received within the recesses 24 in the leg 13 of the saw frame. Upon tightening of the-wing nut 44, the handle frame 26 will be locked in its adjusted position and upon further tightening of the wing nut 44, the blade 21 may be tightened to the desired tension.

Itis to be understood that the form of the invention herein shown and described is to be taken as the preferred embodiment of the invention and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the sub-joined claim.

I claim:-

A hand saw comprising a U-shaped frame, one leg of which is capable of sliding adjustment, a blade mounted in the frame, blade holding blocks, each having a threaded end, a hand grip having a fluted conical boss, an annular flange surrounding the boss in spaced relation thereto, the adjustable frame leg having an opening therein shaped to interfittingly receive the conical boss and surrounded by an annular groove to receive said annular'fiangas'aid boss havingan opening therein for receiving the threaded end of one of the blade holding blocks, a wing nut threaded on the end of the adjacent blade holding block and means for anchoring the other blade holding block in the other end of the U-shaped frame.

DEZSO OKROS.