US2601064A

US2601064A - Nonslip wrench

Info

Publication number: US2601064A
Application number: US178063A
Authority: US
Inventors: Snyder Peter Charles
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-08-07
Filing date: 1950-08-07
Publication date: 1952-06-17
Anticipated expiration: 1969-06-17

Description

June 17, 1952 P. c. SNYDER 2,601,064

NONSLIP WRENCH Filed Aug. 7, 1950 BY dmym ATTORNEYS Patented June 17, 1952 UN D STATE S FATE O FFIC N'ONASEIP WRENCH Peter" Charles Snyder, Shickshinny, Pa.

ApplicationAugustfi, 1950, Serial No.- 178 063 The invention relates to a safety non-slip ratchet wrench for automobile transportingtrucks.

With the ordinary spanner wrench, custom arily employed for engaging the ratchetwheel of the winding shaft or winch-fortightening the chains or cables for securing aplurality of automobiles to an automobile transportingtruck there is nothing to prevent side slipof the spanner and frequently when heavy pressure is appliedlthe spannerslips sidewise. which not only oftenrcsults in injury to the person using the spanner but also damage to the automobiles.

It is," therefora an object of'the invention to provide a simple practical and-"efficient non slip ratchet wrench of strong and durable construction; adapted to-enable heavy pressure to be ap-'- pliedfor rotating the winding shaft" or' winch without liability of side slip or the wrench other-@- wise becoming disengaged from the associated ratchet wheel.

A fu-rther-object of the invention is to provide' anon-slip ratchet wrench of this character which will aiford greater freedom of' movement forrotatingthe winding-shaft and in' which heavy operating pressure will result in a tightergripping of, the ratchet wheel by the wrench.

With the'above and'other objectsin view, the

invention consists in the construction and novel' combination and arrangement of parts herein after fully described, illustrated in the accompanying drawings and pointed out in" the: claims hereto appended; it being understood that various changes in the form; proportions, and minor details of' construction; within the scope of the claims, may be resorted to without departing.

Fig; 4 is an enlarged detail perspective'view of one-end of thewinding shaft illustrating the arrangement ofjthejratchet wheel and safety collarwith which theratchet wrench cooperates Fig. 5 is a detail perspective view of one ofthe:

pawlsof the ratchet wrench;

Figafiis a detail --view of a portion of" the auto- 8*Claims; (Cl. 74-156)- mobile transporting truck and illustrating-2 the" arrangement of the windingshaft or winch;-

Fig. '7 is a detail transverse sectional View;

partly: in elevation/illustrating the manner.- of

' mountingthe'winding shaft or winch.

In the accompanying drawingv in which is illustrated the preferred embodiment of themvention, the safety non-slip ratchetwrench'conesists of a bar I providing at one'end a handleportion 2 and having a head" 3 at the other end.

consisting of an enlargement provided with a substantially keyhole shaped opening 4- disposed longitudinally of the head and consistingof an enlarged circular outer portion 5 and an inner. reduced portion 6 defined byparallel side-wallsandan approximately semicircular endwall 8;

The head is provided at opposite sides with-ears 9' and I0 to which are pivoted pawls H and: I2 located at theinner side face of the head. Thepawls l l and Rare mountedon pivotbolts I37and l4 having smooth pivot portionsand provided-:atone end with a head and having a nut l5 or Hrfor engaging the threads of the bolt.

When the ratchet wrench is applied to the winding shaft or winch I! the pawl engages the teeth E8 of a supplemental ratchet wheel I9 mounted on the winding shaft and suitably secured thereto. adjacent an inner collar 20 which: spacesthe supplemental ratchet wheelfrom' the conventional ratchet wheel 21 of the winding shaft or winch. The conventionalratchet-wheel 2| is engaged by a gravity actingpawl 2 2 -mount-- ed'on a suitable pivot 23 of one of the. frame members 24 of the truck 25= The pawl 22 which handle 26 for enabling it to be readily disengaged from the ratchet wheel when it is desired to remove theautomobiles carried by the transporting truck.

to the winding shaft it is arranged between the supplemental ratchet wheel I!) and an outer collar 21 spaced from the supplemental ratchet.

wheel to provide an annular groove 28*to receive the reduced inner bearing'portion 6 of the keyhole shaped opening of the head of the ratchet wrench. The reduced inner portion 6 of the key-- hole openingis of a width to receive thewinding shaft at the groove 28 and the outer safety collar 21 is of greater diameter than the width of the reduced portion 6 of the keyhole opening so that when the ratchet wrench is applied to the winding shaft, as illustrated inFigs. 2 and 3 of the drawing, it cannot slip sidewise and the greaterithe: pressure applied to'thewrench for is gravity acting. is provided with a suitable When the non-slip-ratchet wrench is appliedv rotating the winding shaft the tighter the wrench will grip the ratchet wheel without danger of any sidewise slip or injury to the operator or damage to the automobiles on the truck.

The pawl II is provided with a stop lug 29 which is arranged to engage the head of the ratchet wrench for limiting the inward movement of the pawl ll so as to position the pawl properly for engaging the supplemental ratchet wheel.

The large outer portion of the keyhole opening enables the ratchet wrench to be passed over the outer collar 21 of the winding shaft and the parallel side walls of the smaller inner portion 6 of the opening 4 will guide the wrench and move the same longitudinally to bring the curved end wall into the groove 28 and into engagement with the winding shaft. By arranging the supplemental ratchet wheel and the collar at one end of the winding shaft, as illustrated in Fig. 7 of the drawing, beyond the conventional ratchet wheel 2 l, the ratchet wrench will have unlimited rotary movement to tighten the connecting lines 30 for firmly securing the automobiles 3| and 32 on the truck 25. The connecting lines may be chains or cables, diagrammatically illustrated in Fig. 6 of the drawings. The winding shaft is designed to be provided with one or more hooks 33 or other suitable means for enabling'the lines 30 to be connected to the winding shaft and one or more guides 34 may be provided for guiding the lines when necessary.

The pawls H and I2 face inwardly and while only one will be engaged with the supplemental ratchet wheel l9, they provide for the facing of the teeth of the supplemental ratchet wheel in either direction to correspond with the arrangement of the teeth of the conventional ratchet wheel 21 so that should the conventional ratchet wheel 2! have its teeth facing in the opposite direction from that illustrated in the drawing, the supplemental ratchet wheel may be correspondingly positioned and the other pawl I2 will then engage with the supplemental ratchet wheel.

I claim:

1. A ratchet wrench for engaging a ratchet wheel of a winding shaft of a truck for transporting automobiles, said ratchet wrench comprising a bar having a handle portion at one end and a head at the otherend having a longitudinal opening closed at both ends and defined by connecting side and end walls, one of the end walls being curved to conform to the configuration of the winding shaft and forming a bearing for the ratchet wrench, and a pawl pivotally mounted on the head and arranged to engage said ratchet wheel when the bearing surface is engaged with the winding shaft, said opening at the other end wall being enlarged and of a size to permit it to pass over a safety collar fixed to said shaft in spaced relation to the ratchet wheel to prevent lateral movement of the ratchet wrench when the bearing thereof is in engagement with the shaft. I 1

2. A ratchet wrench for engaging a ratchet wheel of a winding shaft of a truck for transporting automobiles, said ratchet wrench comprising a bar having a handle portion at one end and provided at the other end-With a longitudinally disposed substantially keyhole shaped opening, the reduced portion of the opening being of a size to fit the winding shaft and presenting a curved bearing surface for engaging the same and the enlarged portion of the opening being of a size to pass over a safety collar fixed to said shaft in spaced relation with the ratchet wheel to prevent lateral movement of the ratchet wrench when the bearing thereof is in engagement with said shaft, and a pawl pivotally mounted on the head of said bar and arranged to engage the ratchet wheel when said curved bearing surface is engaged with the winding shaft.

3. A ratchet wrench for engaging a ratchet wheel of a winding shaft of a truck for transporting automobiles, said ratchet wrench comprising a bar having a handle portion at one end and provided at the other end with a longitudinally disposed substantially keyhole shaped opening, the reduced portion of the opening being of a size to fit the winding shaft and presenting a curved bearing surface for engaging the same and the enlarged portion of the opening being of a size to pass over a safety collar fixed to said shaft in spaced relation with the ratchet wheel to prevent lateral movement of the ratchet wrench when the bearing thereof is in engagement with said shaft, and a pair of pawls pivotally mounted on the head of said bar at the inner face thereof, one of said pawls being in position for engaging the ratchet wheel when the teeth thereof are facing in either direction.

4. A ratchet wrench for engaging a ratchet wheel of a winding shaft of a truck for transporting automobiles, said ratchet wrench comprising a bar having a handle portion at one end and a head at the other end having a longitudinal opening closed at both ends and defined by connecting side and end walls, one of the end walls being curved to conform to the configuration of the winding shaft and forming a bearing for the ratchet wrench and said opening at the other end wall being enlarged and of a size to permit it to pass over the safety collar fixed to said shaft in spaced relation to the ratchet wheel to prevent lateral movement of the ratchet wrench when the bearing thereof is in engagement with the shaft, and a pawl pivotally mounted on the head and arranged to engage said ratchet wheel when the bearing surface is engaged with the winding shaft, and a collar mounted on the winding shaft and spaced from the outer face of the pawl engaged ratchet wheel and forming a groove to receive the head of the ratchet wrench to prevent side slip of the same.

5. A ratchet wrench for engaging a ratchet wheel of a winding shaft of a truck for transporting automobiles, said ratchet wrench comprising a bar having a handle portion at one end and provided at the other end with a substantially keyhole shaped opening closed at both ends, the reduced portion of the opening being of a size to fit the winding shaft and presenting a curved bearing surface for engaging the same, a pawl pivotally mounted on the head of said bar and arranged to engage the ratchet wheel when said curved bearing surface is engaged with the winding shaft, and a collar mounted on the winding shaft and spaced from the outer face of the pawl engaged ratchet wheel and forming a groove to receive the head of the ratchet wrench to prevent side slip of the same and the enlarged portion of the opening being of a size to permit the ratchet wrench to pass over the collar and to be positioned at said groove whereby said reduced portion of the opening may be engaged with the shaft between the collar and the ratchet wheel.

6. In combination with a winding shaft having a ratchet wheel and provided with a collar spaced from the ratchet wheel and forming an annular intervening groove, of a ratchet wrench having a head provided with a substantially keyhole shaped opening closed at both ends, the large portion of the opening being of a size to permit the head to pass over the collar and be positioned between the collar and the ratchet wheel and the reduced portion of the opening being of a size to fit the winding shaft in the groove between the ratchet wheel and the collar, and a pawl pivotally mounted on the head and arranged to engage the teeth of the ratchet wheel for enabling the ratchet wrench to rotate the winding shaft.

7. In combination with a winding shaft havin a ratchet wheel and provided with a collar spaced from the ratchet wheel and forming an annular intervening groove, of a ratchet wrench having a head provided with a substantially keyhole shaped opening closed at both ends and disposed longitudinally of the ratchet wrench, the large portion of the opening being located at the outer end thereof and of a size to permit the head to pass over the collar and be positioned between the collar and the ratchet wheel and the reduced portion of the opening being located at the inner end thereof and being of a size to fit the winding shaft in the groove between the ratchet wheel and the collar, and a pawl pivotally mounted on the head and arranged to engage the teeth of the ratchet wheel for enabling the ratchet wrench to rotate the winding shaft.

8. In combination with a winding shaft having a ratchet wheel and provided with a collar spaced from the ratchet wheel and forming an annular intervening groove, of a ratchet wrench having a head provided with a substantially keyhole shaped opening closed at both ends and disposed longitudinally of the ratchet wrench, the large portion of the opening being located at the outer end thereof and of a size to permit the head to pass over the collar and be positioned between the collar and the ratchet wheel and the reduced portion of the opening being located at the inner end thereof and being of a size to fit the winding shaft in the groove between the ratchet wheel and the collar, and a pair of pawls mounted on the head at the reduced portion of th opening and having inwardly facing engaging portions, one of the pawls being adapted to engage the ratchet wheel when the teeth thereof are facing in either direction.

PETER CHARLES SNYDER.

REFERENCES CITED The following references are of record in the file of this patent:

, UNITED STATES PATENTS Number Name Date 83,558 Sims Oct. 27, 1868 673,742 Wade May 7, 1901 740,878 Lewis Oct. 6, 1903 1,063,770 Brocklebank June 3, 1913 2,474,402 Napier June 28, 1949 FOREIGN PATENTS Number Country Date 44,822 France Apr. 15, 1935