US 1200430 A
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Description (OCR text may contain errors)
J. B. BOSENSTEIN.
ADJUSTABLE RATCHET WRENCH.
1 ,200330. Patented Oct. 3, 1916.
JACOB B. ROSEN STEIN, vOF CLEVELAND, OHIO, ASSIGNOR T0 THE MARVEL ACCESSORIES MANUFACTURING COMPANY, OE CLEVELAND, OHIO, A CORPORATION.
To all wwm t may concern Y Be it known that I, JACOB B. RosnNs'rEIN,
a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have inventedy certain newV and useful Improvements in Adjustable Ratchet-"Wrenches, of which the following is a specification. y
This invention relates to an adjustable ratchet wrench, and the invention consists in a. wrench handle provided with a head and having the construction and combinationof parts substantially as shown and described and particularly pointed out in theclaims.
In the accompanying drawings, Figure 1 isaplan view and Fig. 2 is a side elevation of the wrench. Fig. 3 is a vertical sectional elevation of the wrench head, nut and jaws, and Fig. 4 is a like section of the same parts at right angles to Fig. 3. Fig. 5 is a cross section on line 5-5 looking down, and Fig. 6 is a bottom view of Fig. 5. Fig. 7 is a cross section on line 7-7 Fig. l, showing the pawl held by two coiled springs.
The wrench comprises an operating handle H, with a socket or opening 2 through the head thereof which is circular or round and provided with a recess 3 in its side and a cylindrical pawl 4 therein adapted to engage a nut or the angular shank s or spindle s of a wrench member. Handle I -I may be applied directly to the shortshank s of head z. which carries a pair of clamping jaws 7, but
in case the nut, bolt or other part to be4 turned is remotely located or intervening parts prohibit the use of the handle directly with short shank s, I may use .a longer spindle s having a socket adapted to seat upon said shank and apply the handle to said spindle, see Fig. 2. In the present construction I show both the said shank and spindle of hexagonal shape in cross section so as to engage the handlek rotarily therewith, and.
make the opening 2 through the handle for said parts circular or round with a side recess 3 in which pawl 4 is free to slide within limits to engage and disengage the angular' corners of a nut or the said shank or spindle in reverse directions of rotation, more or less after the manner of a ratchet movement. To these ends the said recess in the handle socket is provided with two flat shoulders or surfaces a and a nearly at right angles to each other in definite relations to the inner wall .of opening 2 .S9 as t9 provide a seat f9.1'
Specication of Letterslatent. Application liled Tune 10, 1916. Serial No.` 10238.28.
Patented Oct. 3, 1946.
the pawl wherebyV automatic engagement and release of the pawl 4 may be had with the flattened sides of the Vshank or spindle. rIhe said pawl is preferably of barrel or cylindrical shape, likek a piece of round rod or wire, Aand nearly as long as the depth of theY l handle head and the recess therein, and theY the outer endof the bore or bores 5 in the head. In this way, pawl 4 is held inward against shoulder a into .locking position. v.Otherwise the said reoess is constructed with'a round enlargement to afford room for the comparatively slightback and forth movement of the pawl under the accommodating tension of the spring or springs 6.
Two springs 6 are preferred, one at each end Y of the pawl 4, to equalize the tension and holdV the pawl in straight alinement with the flat sides of the shank.
y In operation, the Vpawl 4 will come into engaging position with the said parts as seen in Fig. l, wherein the shoulder a serves as a back stopunder operating pressure and the shoulder a as a confining medium for the pawl to hold the same firmly in engaging position against the said shank or spindle. The size or cross section of the pawl therefore must be such that it will impinge on the angular cornerv of the shank or spindle to forcibly rotate the same, as would occur in Fig. 1 if the handle were turned in the direction vof the arrow to bring. pressure against the angle X. The back -stroke of the handle is idle as in this movement the pawl 4 is carried away from shoulder a more or less into the rounded enlarged portion of recess 3 to escape the corner y, but upon a second forward movement of the handle this corner y will be engagedvby the cylinder 4 as' before because the spring 6 immediately ynally of the head by an internal thread and has an internally flared or rounded eXtension 11 adapted to press the jaws together at their lower ends, said jaws comprising flat faces l2 set in angular relations adapted to gripa nut or bolt head. A coiled spring 9 connects the upper ends of said jaws above their common pivot S and throws and holds them open when not pressed into engaging of different sized members which areusually furnished in sets as an automobileV accessory or equipment.
What I claim is: l. A yhandle to impart a ratchet .move` ment having a cylindrical opening through the head thereof and a recess in the side of said openingthe full width of said head Copies of this patent may'be obtained` for fiveV cents each, by addressing the Commissioner of Patent f `Washington, D. C.
having shoulders and a bore through said head at right angles to said recess and eX'- tending into the same, a substantially cylindrical pawl in said recess and a spring anchored at its outer end in said bore and engaged at its inner end with said pawl and adapted to confine the pawl in the recess and to draw the same to locking position.
2. A handle to impart a ratchet movement having an opening through the head thereof and a recess in the side of said opening open at both sides of the head and a plurality of bores extending into said recess, a cylindrical pawl substantially the full width of the yhead seated in said recess and a plurality of springs fixed at one'end in the outer portion of said bores and at the opposite ends f on said pawl.
In testimony whereof I affix 1n presence of two witnesses.`
JACOB B. ROSENSTEIN.
my signature Witnesses:
R. B. MOSER, F. C. I-IAnRoLD.