US1431994A

US1431994A - Pipe wrench

Info

Publication number: US1431994A
Application number: US495470A
Authority: US
Inventors: Walter J Thomas
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-08-26
Filing date: 1921-08-26
Publication date: 1922-10-17
Anticipated expiration: 1939-10-17

Description

W. J. THOMAS.

1 PIPE WRENCH. APPLICATION FILED AUG-26. 1921'.

- mm I 35 a -Fig.2 is a rear edge elevation of the 1m- Patented Oct. 17, 1922..

[marred stares inear earsar ca tes WALTER J". THOMAS, 011 MEMPHIS, TENNESSEE.

PIPE WRENCH.

Application filed August 26,1921. Serial No. 495,470.

T all to ham it may concern Be it known that I, WALTER J. THOMAS, a citizen of the United States, residing at Memphis, in the county of Shelby and State of Tennessee, have invented certain new and useful Improvements in Pipe i/Vrenches, ofv

which the following is a specification. This invention relates to improvements in pipe Wrenches. The primary object of the inventlon is the provision of a wrench designed in novel manner for use in pipe work and to efiect the movements necessary in attachment or detachment of pipe connections and the like. A further object of the invention is the provision of a pipe wrench of the above described character, in which thevarious parts have been durably constructed in cooperative manner, to provide an assembled'wrench structure capable of withstanding the strain incident to use;, in this respect differentiating fromthe standard type of pipe wrench which is weakly constructed in parts necessitated by the peculiar movements which a wrench of the type specified must have.

"Other objects and advantages will be apparent during the course of the following detailed description.

In the accompanying drawings, form ng apart of this specification, and in which similar reference characters designate corresponding parts throughout the several views, i i Figure' l is a side elevation of the. improved pipe wrench;

proved pipe wrenchy a i Fig. 3 is a sideelevation, partly lIl section, showing the cooperative arrangement of the vario'usadjustable parts. upon the wrench; Eiga 4 isa cross sectional view, taken on theline 4 4 ofFig. 1;

Fig. 5 is an enlarged end view of the movable aw, included in the pipe wrench;

Fig. 6 is an enlarged perspective view of a detail. embodied in the improved pipe wrench. f l, r i

In the drawing,.whereinfor the purpose of illustration is; shown the preferred em-' 'bQd-iment of my invention, the letter A designates a supporting tructure having the ,m'ovable jaW- 13. attached thereto in adjustable relation bythe adjusting means C.

Thegsupporting structure A includes the handle or hand. engaging portion 10, upon acent the jaw element which is rigidly formed the head 11. A jaw element 12 is preferably attached in any approved manner to the supporting structure A, the same comprising the stationary jaw of the wrench structure. The head 11 is provided with a socket aperture 13 therein, ad-

12. A pair of lugs 14' are provided upon

opposite sides

15 and 16 of the head 11, and immediately adjacent the rear arcuate edge 17 of'said head 11. Likewise, a pair of lugs 18 are formed upon the

outer sides

15 and 16 diametrically opposite thelugs 14- with respect to the socket aperture 13. Certain end faces 19 and 20 of the

lugs

14 and 18 respectively are provided in a plane extending radially of the socket opening 13, and for a purpose to be subsequently set fort The movable jaw B has been designed to overcome the deficiencies in the ordinary type of pipe wrench. The same preferably comprises the jaw head 25 and the stem 26. The stem 26isbifurcated to provide the spaced

shank extensions

27 and 28, the space 29 intermediate said

shank extensions

27 and 28 being of uniform width throughout the length of said shanks and sufficient to freely accommodate the width of the head 11. The upper and

lower edges

30 and 31 of the

shanks

27 and 28 are flattened, the

sides

32 and 33 of the

shanks

27 and 28 respectively, being screw threaded, in cooperative manner, for engagement with the structure C. The article engaging surface 35 of the jaw head 25 is provided with the teeth 36 arranged in V-shaped manner as to their length, transversely upon the surface 35, the apex of each of said teeth 36 preferably pointing toward the forward edge 38 of the jaw head 25.

The adjusting means C, preferably comprises the reinforcing filler member 40 having its ends 41 arcuate in formation and struck from the same radius asthe radius of the socket aperture 13. The filler member .40, in fact, is of the same width, as the width of head 11 and is adapted for disposition within the socket aperture 13. in

' that the ring nut 43 may be positionedin the socket aperture 13 for oscillation therein. In assemblage, the movable aw B is so positioned over the supporting structure A that the teeth 36 thereof cooperate with the I teeth upon the stationary jaw 12. in this position, the

shanks

27 and 28 forming the stem 26 will overlie'the op

oosite sides

15 and 16 of the head 11. l reparatory to connection of the movable head B for adjustment upon the supporting structure A, the tiller member 40 must be inserted within the'adjusting nut as, and placedtransversely through the socket aperture'lB. The

shanks

27 and 28 can next be, positioned for insertionthrou gh the nut 13, and upon rotation of said nut 43 within thesocket aperture 13, the same will engage the threads and 33 of the

movable jaw shanks

27 and 28 and feed the movable jaw B toward the stationary jaw 12.

Arouate springs are provided for engagement upon the flat surfaces 31 of the

shanks

27 and 28 said springs 50 being held by the lugs 14 in such manner that they extend forwardly to engage the shanks of the movable jaw B above the axis or center of the socket aperture 18, thus normally rocking the movable jaw B so that the jaw head 25 thereof is in proximate relation with the jaw 12.

In operation, the improved pipe wrench is used in manner similar to the ordinary type of pipe wrench. The movable jaw B is positioned by the adjusting mechanism C so that the same may engage a piece of pipe to be attached or detached. The springs 50 will. of course, as hereinbefore described, rock the movable jaw C forward to normally grasp the pipe or article between the jaws of the wrench. Upon rotation of the pipe wrench by the operator pushing upon the handle 10, the jaws will securely engage the said pipe to perform the desired work. Due

to the V-shaped length of the teeth.36, a better grasp'may be had upon apiece of pipe in a predetermined length,than that which the ordinary arrangement of teeth is able to effect.

From the foregoing it can be seen that a pipe wrench has been provided, in which the movable jaw B is capable of relative feeding longitudinally of the supporting structure A, as well as capable of oscillation in thehead 11. proved type of pipe wrench avoids the weaknesses of the ordinary type of pipe wrench. This weakness in the ordinary type of pipe wrench is mainly due to the factthat but a single stem is provided upon the movable jaw B for engagement by the adjusting means.

thereon. It can be readily seen that the In addition, the implurality of screw threaded

shanks

27 and 28 will provide a wrench capable of withstandina great stresses. The adjusting means a is of such a compact nature as to provide the exact movement of the movable jaw B without any lost motion and can function in perfect manner.

Pipe wrenches of the type shown are sometimes of considerable weight and are apt to become broken due to the rough usage to which the same are subjected. To prevent any breakage of the movable jaw B or its cooperating parts, the springs 50 will act as buffer elements. The lugs 18 will likewise prevent injury to the springs 50 due to excessive oscillation of the movable jaw B upon its axis defined by the center of the socket aperture 13. V

Various changes in the shape, size and arrangement of parts may be made ,to the form ofthe invention herein shown and .de: scribed, without departing from the spirit of the invention or the scope 'of the claims.

I claim: 1. A wrench, comprlsing 1n combination a support ng structure including a aw and socket opening, a movablejjaw comprising a bifurcated stem to provide spaced shanks externally screw threaded on the outer sides thereof for overlying opposite sides of said supporting structure, afiller member in said socket opening, andan adjusting nutwithin said socket opening and engaging said screw threaded shanks for straight line and arcuate movement of said movable jaw. I Y I 2. A wrench comprising in combination a supporting structure including a handle, av

stationary jaw, and having asocket opening therein, amovable jaw includinga aw head. and; a pair of'spaced shanks, said shanks being externally screw threaded,a filler member of the same. width as said supporting structure and adapted for oscil- 1 latory: movement within said socket opening, a ring shaped adjustment nut for oscillae tory movement within said socket opening and adapted for receiving-said filler meniber and to engage the screw threaded shanks of said movable jaw, said shanks being positioned upon opposite sides of said supporting structure.

3. A wrench comprising a stationary jaw including a supporting structure having a transverse perforation therein, a movable jaw including a pair of spaced screw threaded shanks adapted'for receiving said supporting structure of the stationary jaw in the space intermediate said screw threaded shanks, and an adjusting nut snugly disposed within said perforation for oscillation longitudinally of the shanks and rotation transversely thereof and engaging the screwv threaded shanks when so disposed i therein, whereby the movable jaw is adjustably positioned on the supporting structure against displacement.

4. A wrench, comprising a stationary jaw structure including a supporting extension having a cylindrical shaped aperture laterally disposed therethrough, a movable jaw including a pair of spaced screw threaded shanks adapted to receive said stationary jaw extension therebetween to be disposed upon each side of the aperture therethrough, a nut snugly disposed for rotation within said aperture and engaging said screw threaded shanks for adjustment on the movable jaw, said nut engaging the interior surface of said perforation at diametrically opposed points.

5. A wrench comprising a stationary jaw including a supporting extension having a circular opening laterally therethrough, a movable jaw structure including a pair of spaced screw threaded shanks adapted for receiving the supporting structure of said stationary aw therebetween, and an internally screw threaded socket nut adapted for lateral placement in the circular opening of said stationary jaw structure for engaging the screw threaded shanks and whereby said nut may be rotated for adjusting said movable jaw and prevent accidental displacement thereof.

6. A wrench, comprising a stationary jaw including a supporting structure having a circular aperture laterally therethrough, a movable jaw structure including a pair of spaced apart screw threaded shanks adapted for receiving saidisupporting, structure therebetween, and to extend past the circular opening therein, a filler piece of substantially the same width as the width of said supporting structure on the stationary jaw and adapted for snug fitting and rotary movement in the circular aperture intermediate said threaded shanks of the movable jaw, and a nut adapted for engaging the screw threaded shanks and for snug rotary movement within the circular aperture of the supporting structure, and whereby the movable jaw may be adjustably positioned for longitudinal and arcuate movement with respect to said stationary jaw.

7. A wrench, comprising a supporting structure including a jaw having a substantially cylindrical opening therein, a second having a pair of screw threaded shanks extending therefrom, and adjusting means oscillatively disposed in said substantially cylindrical opening and engaging said screw threaded shanks for movement of the second j aw, said adjusting means being so retained in the opening by said shanks as to be the direct means of maintaining the shanks in proper position upon the supporting structure.

WALTER J. THOMAS.