Патент USA US2411028код для вставки
Nov. l2, 1946. A. DAvlEsl ETAL 2,41 1,028 SAW HANDLE Filed Nov. 17, 1943 _Áaï’ûn ,pdv 1:86' INVENTORS _Elmer Smiìïz, BY Í ATTORNEYS Patented Nov. 12,1946 ' '2,411,028 UNITED STATES PATENT ~ OFFICE 2,411,028 SAWy HANDLE Aaron Davies and Elmer Smith, Bakel', Orcg.; Grace Davies administratrix of said Aaron Davies, deceased Application November 17, 1943, Serial No. 510,688 2 Claims. Our invention relates to- crosscut saws, and has among its o-bjects and advantages the pro vision of an improved detachable handle embody ing novel means whereby the handle may be easily and quickly attached to or detached from the saw, with the construction such that the change may be made with mittened hands. In the accompanying drawing: ì Figure 1 is a face view of one end of a conven tional crosscut saw illustrating the handle ap plied thereto. Y Figure 2 is an enlarged sectional View along the line 2-2 of Figure l. Figure 3 is a sectional detail View illustrating the condition of the handle latch preparatory to connection of the handle with the saw, and Figure 4 is an enlarged sectional View of the structure of Figure 2 but rotated ninety degrees. (Cl. 145-111) 2 48, and a compression spring 'l0 is interposed be tween the ball 64 and the plug 68. This body is provided with air and moisture vents 12. In operation, the spring ‘I0 normally holds the latch pin 54 in the position of Figure 3 when the handle is detached from the saw. At this time, the pin 54 is restrained from outward move ' men-t beyond the position shown, with the ball 64 projecting partly across the slot 46. How 10 ever, the tapered end 6B lies to one side of the slot 46 so that the end of the saw blade Il) may be inserted in the slot and pressed therein against the tensioned ball. As the bal1 64 is brought into the opening I2 in the Saw blade I0, the latch pin 54 is correctly aligned with the opening I2 so that the latch pin may be pressed through the opening to the position of Figure 2. The wing nurl 28 is then tightened which clamps the handle bar Iii firmly between the bodies I8 In the embodiment of the invention selected for illustration, the crosscut saw I0 is provided 20 and 20 and at the same time causes the member with an opening I2 adjacent each end thereof. 32 to be clamped firmly against the end of the This is conventional construction. saw blade. In addition, the latch pin 54 is The handle I4 comprises a handle bar I6 ' clamped firmly against the wall area 'of the adapted to be clamped between two curved bod opening I2 so as to be restrained from relative ies I8 and 2B. Both bodies are provided with movement, notwithstanding the tension of the aligned openings 22 for the reception of a shaft spring 153. Thus the latch pin 54 will be firmly 24 having threads 25 for coaction with a wing secured in the position of Figure 2. nut 23 lying against the body I8. The shaft nts When the handle structure I4 is to be detached ’loosely in the openings 22 as well as in an open from the saw blade I8, slight unloosening of the ing 30 through the handle bar I6. This handl wing nut 28 permits the spring 10 to project the bar may comprise hard wood. ’ ball 64 and the latch pin 54 to the positions of A saw engaging member 32 is provided with Figure 3, at which time the saw blade may be a groove 34 toI receive the end margin of the easily withdrawn from the slot 46. saw blade Iß. This member is provided with a Without further elaboration, the foregoing will centering projection 36 receivable in a recess or 35 so fully explain our invention, that others may, socket 38 in the body 20, Lugs 40 are formed on the member 32 for reception in a groove 42 by applying current knowledge, readily adapt the same for use under various conditions of in the body 20 to restrain the body from rotation service. about the axis of the shaft 24. We claim: An opening 44 is provided in the member 32 40 1. In combination with a crosscut saw blade for loosely receiving the shaft 24, and this shaft is provided with a slot 46 in which the saw blade I0 is loosely receivable. having an opening adjacent one end thereof, a handle structure comprising a shaft having a slot to receive the end of the saw blade, a hand To the end of the shaft 24 adjacent the saw blade I0 are connected two laterally projecting 45 grip having an opening loosely receiving said shaft, ñrst and second bodies bored to loosely bodies 48 and 50. The body 50 is provided with receive said shaft and positioned on opposite a bore 52 for slida-bly receiving ailatoh pin 54 sides of said hand grip, said first body having having a shoulder 56 engageable with the annu means engaging the end of the saw blade, said « lar flange 58 at the outer end of the body 5I), but shaft having lateral extensions provided with a the pin end 6i) of the latch pin 54 is freely slida 50 bore intersected by said slot, a latch pin slidably ble in the ñange 58. guided in said last mentioned bore at one end A bore 62 is provided in the body 48 for guid- ' thereof to pass through the slot for insertion ing a ball B4 engageable with the tapered end through the opening in the saw blade, a spring 66 of the latch pin 54. A plug 68 is threaded pressed ball located at the other end of the bore, into the otherwise open outer end of the body bl' Ul said ball engaging one end of the latch pin to 2,411,028 3 normally position said end adjacent one side of the slot with the ball projecting partly through the slot to be engaged by the saw blade and fall into the opening therein to align the latch pin with said opening, said latch pin being projecta ble through the opening against the tension of said spring and being frictionally held to the saw blade to resist retraction by said spring, by a nut threadably connected with the shaft adapted to engage said second bodâ1 to clamp 10 the hand grip between the ñrst and second bodies 4 and the saw blade between the ñrst body and said latch pin, and means limiting the retracta ble movement of the latch pin. ` 2. The invention described in claim 1 wherein said engaging means comprises a grooved mem-, ber interposed between said ñrst body and the saw blade, and means on said ñrst member and said grooved member cooperating to restrain the two from relative rotation. AARON DAVIES. ELMER SMITH.