US2496762A - Nut starting wrench - Google Patents

Description

Feb. 7, w50 c. J. WEYRAUCH 2,496,752

NUT STARTING WRENCH Filed NOV. .8, 1945 v Inventor Patented Feb. 7, 1.95@

NUT STARTING WRENCH Cyril J. Weyrauch, Ray, N. Dak. Application November 8, 1945, Serial No. .627,304

3 Claims.

This invention relates to a special tool such as may be conveniently identiiied as a nut-starting wrench, the same having reference to a Wrench which lends itself particularly adaptable to facilitate handling an initial rotation of a nut such as is used on`a starter and generator employed in certain types of Wright airplane engines;

In practice, I have found that available and ordinary methods and tools, because of the peculiar location oi the nut on the starter and generator, are not suitable or satisfactory. With this in mind, I have evolved and produced a special nut-starting wrench which will save about two to three hours labor in installing a generator or starter on the above type airplane engines. ln accordance with my idea, the wrench will appreciably expedite the starting of a nut on the housing oi these two accessories, and, in practice, has proved to be aptly suited for intended purposes.

The invention is also practicable and may be resultfully and advantageously used in Working on automobiles and trucks, that is, on such parts thereof where a nut is in an out-of-the-way and substantially inaccessible place and is, ordinarily, difficult to apply and then thread into position.

Another object is to provide a tool which will accomplish desired results in a feasible manner and which will obviate the usual practice of attempting to start the nut with ones ngers.

Another object of the invention is to provide a simple, reliable and durable nut starter susceptible of production from simple and readily available parts and elements.

Other objects, features and advantages of the invention will become more readily apparent from the following description and the accompanying illustrative drawings.

In the drawings, wherein like numerals are employed to designate like parts throughout the same: y

Figure l is a top plan view oi a nut-starting wrench or tool constructed in accordance with the principles of the present invention.

Figure 2 is a longitudinal View through the same, the parts being primarily in section with others appearing in elevation.

Figure 3 is a horizontal section on the plane of the line 3--3 of Figure 1, looking downwardly in the direction of the arrows.

Figure 4 is a cross section on the line fl-ll of Figure 2 looking upwardly in the direction of the arrows.

Figure 5 is a perspective view on a relatively small scale showing the general construction and appearance of parts.

Figure 6 is a horizontal section, like Figure 3, and showing the nut and manner in which the same is held and rotated.

Referring now to the drawings by distinguishing reference numerals, it will be seen that a substantially rigid L-shaped tube l is provided, the long limb 8 thereof being fitted and secured in the enlarged end portion 9 of the cylindrical barrel I9. At II is a suitable stop shoulder. The limb B is thus fitted into this enlarged portion 9 and terminates at the point indicated to form a stop shoulder I2. The opposite short limb I3 is tted into a socket provided in the body portion I4 of the nut adapter head I5. This head, in addition to the body, includes an annular holder or ring l5 having, at its top,v an inturned endless abutment flange I'I. Said ring is adapted to accommodate the nut (not shown), as is obvious. The body is formed, on one side, with a passage screw-threaded to accommodate a plug I8 (see Fig. 3), this holding in place a spring I9, which in turn projects a detent ball 2i into the inner area of the ring. A reciprocatory rod or heavy wire 22 is mounted in a central bore formed in the L-tube 'I, the free end thereof, 23, projecting into the area surrounded by said ring I6. The opposite end of the wire is securely connected to an actuating plunger 24 for operation in conjunction therewith.

The plunger is provided with a stop collar 25 which works in the enlarged end or socket 9, the same engaging the shoulder II in one direction and the shoulder l2 in the opposite direction to limit the stroke of the plunger and consequently the movement or stroke of the nut starter wire or rod 22. There is a similar collar at 26 which coacts with a concavo-convex washer 2'I which is secured to the upper end of the barrel I0. A similar disk or washer 28 is removably secured by a fastening 29 to the upper end of the plunger and a coiled spring 30 surrounds the protruding end of the plunger and is conned between the two washers 21 and 28. The washer or disk 28 serves as a hand-thrust element.

The nut to be turned is placed in the nut-retaining ring I6 and is partly held in initial position by the starter wire 23. By then placing the nut on the threaded shank of the bolt (not shown) and reciprocating the plunger and wire, it is evident that the wire end 23 successively engages the circumferentially spaced corners of the nut, iiexes to one side (as shown in dotted lines in Figure 6) and this turns the nut in a step-by-step manner. The nut is prevented from retrograde movement by the ball detent 2|, in an obvious manner.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Minor changes in the shape, size and arrangement of details coming Within the eld of invention claimed may be resorted to in actual practice, if desired.

I claim:

1. A nut starting wrench of the class shown and described comprising aheadincludingablocklike body portion and a wcomplemental ring-like member to surround a nut which is to be started and turned, said ring-like member being provided Wholly around one marginal edge portion with an inturned annular abutment flange adapted to rest upon the stated nut, said ring-like member being adapted to surround the nut, said block-like body portion being provided, along an extension of a chord of the ring-like member, with a passage opening at its inner end into the space sur rounded by the ring-like member and opening at its outer end through a marginal edge portion of said body portion, said passage being screwthreaded at its outer end, a spring-pressed detent ball mounted and retained for oper-ation in said passage,.said ball being located at the inner end of the passage and projecting into said space, a screw-plug threaded into the outer end of said passage and retaining said detent ball in place in the passage, a horizontal bore also formed through said body portion and opening at its inner end into said space and opening at its opposite outer end through said body portion, said bore being parallel to but circumferentially spaced from said passage, handle means disposed at right angles to and rigidly connected with said body portion and spring-retracted, manually projected plunger means embodied in said handle means and including a nut engaging and turning Wire, the latter having an end portion reciprocable in said bore and projecting, in a plane parallel with said flange, into said space,

whereby a free end of same may be utilized to turn a nut when the latter is confined in said ring-like member with said abutment flange resting on the nut.

2. A nut starting Wrench of the class shown and described comprising a head including a block-like body portion and a complemental ringlike member to surround a nut which is to be started yand turned, said ring-like member being provided wholly around one marginal edge portion with an inturned annular abutment flange adapted to rest upon the stated nut, said ringlike member being adapted to surround the nut, said block-like body portion being provided, along an extension of a chord of the ring-like member, with a passage opening at its inner end into the space surrounded by the ring-like member and opening at its outer end through a marginal edge portion of said body portion, said passage being screw-threaded at its outer end, a spring-pressed detent ball mounted and retained for operation in said passage, said ball being located at the inner end of the passage and projecting into said space, a screw-plug threaded into the outer end of said passage and retaining said detent ball in place in the passage, a horizontal bore also formed through said body portion and opening at its inner end into said space and opening at its opposite outer end through said body portion, said bore being parallel to but circumferentially spaced from said passage, handle means embodying a rigid L-shaped tube secured at one end to said body portion With its bore in alignment with the aforementioned bore, and projectable and retractable plunger means including a nut starting and turning wire, said wire being mounted for reciprocation in the stated bore and in the bore of said tube, an end of said Wire projecting into the stated space in spaced parallelism with said nange and adapted to engage and turn the stated nut, said detent ball serving to prevent retrograde rotation of the nut.

3. A nut starting wrench of the offset remote controlled type shown and described comprising a rigid substantially L-shaped offset tube, remote controlled plunger means mounted on one end of said tube and embodying a nut starting and turning Wire mounted for reciprocation in said tube, a Wrench head embodying a ring-like member adapted to surround a nut, said ring-like member being provided With an abutment flange adapted to be seated upon the nut to be turned, a spring-projected detent ball mounted on said head and normally projecting beyond the inner peripheral surface of said ring-like member and adapted to engage a peripheral portion of the nut to prevent retrograde rotation of the nut, said head having a bore opening at its inner end through the inner periphery of said ring-like member and opening at its outer end through a marginal portion of the head, said head being rigidly mounted on the remaining end of the L- shaped tube and the bore of said tube being in alignment with the bore in said head and said Wire being mounted for reciprocation in the bore in the head and having its nut-starting end projecting into the space surrounded by said ringlike member.

CYRIL J. WEYRLAUCH.

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

UNITED STATES PATENTS Number Name Date 132,823 Gibbs Nov. 5, 1872 745,281 Hume Nov. 24, 1903 873,977 Albrecht Dec. 17, 1907 1,633,237 Whitlow June 21, 1927 1,764,990 Schultz June 17, 1930 1,972,239 Rose Sept. 4, 1934 2,320,967 Dunkelberger June 1, 1943

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