US2729127A

US2729127A - Slidable jaw wrench with hand grip and adjusting link

Info

Publication number: US2729127A
Application number: US352766A
Authority: US
Inventors: Watanabe Yasuo
Original assignee: Individual
Current assignee: Individual
Priority date: 1953-05-04
Filing date: 1953-05-04
Publication date: 1956-01-03
Anticipated expiration: 1973-01-03

Description

Jan. 3, 1956 YASUO WATANABE SLIDABLE JAW WRENCH WITH HAND GRIP AND ADJUSTING LINK Filed May 4, 1955 wk Q m Q i i 7 N w H .3 N wk i am mm x v mm mm smx w w R wm vw mm. mm

Yasuo Wafanabe IN V EN TOR.

United States Patent SLIDABLE J AW WRENCH WITH HAND GRIP AND ADJUSTING LINK Yasuo Watauabe, Kalaheo, Kauai, Territory of Hawaii Application May 4, 1953, Serial No. 352,766

3 Claims. (Cl. 81-88) This invention relates generally to the art of hand tools and pertains more particularly to a multipurpose tool of improved construction.

A primary object of this invention is to provide a combination tool of simple and effective design which will enable a potential user to have readily in access in a single construction several separately usable tool elements of the character described.

Another object of this inventionis to provide a combination tool whose component parts cooperate in a provide a sturdy and shown in Figure 1 showing its jaws in open position and position of the screwdriver blade showing an extended in dotted lines;

Figure 4 is a perspective view partly broken away showing the adjusting sleeve;

Figure 5 is a vertical section showing a forward portion of the tool with the saw blade in extended position;

Figure 6 is an elevational view of a modified form of tool head construction; and

Figure 7 is a perspective view of a modified form of attachment. 7

Referring now more particularly to Figures. 1-3, reference numeral 10 indicates generally an elongated handle which is recessed throughout its entire length to provide a substantially channel-shape in cross section which is defined by the bottom or web 12 and the upstanding walls 14. One end of the handle is provided with a depending hammer head portion 16 and on the opposite side with an upstanding stationary jaw 18 and, thereadjacent, the upstanding lug 20 of inverted U-shape, as shown. These latter portions are formed integrally with the handle and form the head portion of the tool assembly. The walls 22 of this portion are constructed as continuations of the side walls 14 of the handle and it will be noted that the stationary jaw 18 projects and is continuous thereacross to present the under planar surface 24 which provides a guide surface for the shank 26 extending from the movable jaw 28. A pin 30 extends between the walls 22 and provides a bearing member for the under surface of the shank 26 and cooperates with the surface 24 to provide a guide assembly for the movable jaw shank 26. The shank is flat in cross section and provided with arouate upper and lower surfaces throughout the extent of its free end portion 32, this portion being externally threaded as shown.

An actuating lever 34 has its main hand-grip portion 36 extending generally in the same direction as the handle 10 and is provided with a laterally bent end portion 38 whose terminus is received between the side walls or legs 14 and pivotally secured thereto as by the pin 40. An intermediate portion of the lever is provided with a pivot pin 42 which pivotally secures the bifurcated end portion 44 of the adjusting link 46 thereto. The opposite end of this link is also bifurcated to present the spaced legs 48 which are provided adjacent their extremities with the annular groove 50 within which the adjusting nut 52 is received, this adjusting nut being engaged on the threaded portion 32 of the shank 26. It will be noted that the adjusting link is generally H-shaped and provided with a cross bar 54 which serves as a limit stop for the free end of the threaded shank.

The lock or stop nut 56 is also received on the threaded portion of the shank 26 and serves to limit the spacing permitted between the two

jaws

18 and 28, this being particularly useful when the assembly is to be utilized as a wrench. It will be readily appreciated that the actuating lever 36 through its

pivotal connections

40 and 42 will provide a substantial mechanical advantage in its: operation for powerfully urging the movable jaw 28 to-- ward the stationary jaw 18.

The free end of the head portion of the tool is b'evelledi in the wall portion 22 as indicated by the reference nu-- bevelled wall portions cooperate with, the depending tapered portion 60 of the movable jaw which is provided on its inner face with the stepped porbevelled wall pormeral 58 and these tion 62 which projects between the tion and presents a wire cutting assembly.

The saw blade 64 is secured at one end to the clamping;

block 66 which is of generally rectangular constructionthe wall portions between the side wall 14 shown in Figure 3 and in this a laterally deformed portion the notch 68 to maintain the saw this respect, the pin 76 extending tion the saw assembly,

clearance for the stepped portion-62.

When it is desired to utilize the saw assembly, thesame is withdrawn outwardly from the tool and is reversed and the clamping head or block 66 is reinserted between the Walls 22 in the manner shown in Figure 5. In this position, the notch 70. receives the portion 74of the spring clip and other surfaces of the block cooperate with the previously mentioned

pins

30 and 76 to help maintain the assembly in proper position for sawing operation. To provide rigidity to the saw assembly, the stepped portion 62 of the movable jaw assembly is clampingly engaged in one corner of the clamping block 66 as shown in Figure 5 which serves to prevent wobbling of the saw while in use.

Referring now more particularly to Figure 3, it will be seen that the free end of the handle assembly is provided with an enclosed boss portion 80 which presents the aperture 82 which, in conjunction with the transverse pin 84 serves as a guide for the elongated screw-driver blade 86 received between the side walls 14. This blade is provided at its opposite ends with a laterally bent threaded portion 88 which extends outwardly of the handle and is provided with a locking nut 98 engageable within the recess 92 to prevent longitudinal displacement of the screwdriver blade when this lock nut is seated as shown in Figure 3. Another recess 94 is provided adjacent the pin 84 and it will be readily apparent that when the lock nut 90 is-engaged within the recess the screw-driver blade will extend rearwardly from the handle for operation as will be obvious.

Referring now more particularly to Figure 7, a'modified form of construction is shown wherein the shank 96 terminates in the pointed joint point 98 for boring holes.

This assembly is utilizedin place of the screw-driver blade previously described. Referring now more particularly to Figure 6, the modified form of construction is identical in allrespects to the construction previously described as is shown in Figures 1-3 with the exception that the depending head portion 100 is formed as a hatchet blade for obvious reasons.

If desired, the lower edge of the handle may be provided with suitable indicia so that the same may be utilized as a ruler or scale.

It is preferred that a spring 102 may be provided in engagement with the actuating lever 34 and secured to the handle by the transverse pin 104 so that the lever is normally engaged to a position away from the handle 10.

In operation of the plier portion of the tool, it will be readily apparent that although the shank and adjusting link assemblies are not constrained inasmuch as there is slight play therebetween due to the groove 50 being of greater width than the adjusting nut 52, when the article 'to be gripped is placed between the two jaws, and the actuating lever urged toward the handle, the shank and link will tend to align themselves which, in conjunction with the guiding effect of the pin as well as the surface 24 of the stationary jaw 18, will constrain the movement of the movable jaw toward the stationary jaw.

From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claims.

What is claimed as new is as follows:

1. A combination tool comprising an elongated handle having a stationary jaw at one end, a movable jaw carried by said handle movable toward and away from the stationary jaw, means for moving said movable jaw, said handle having an apertured lug adjacent said stationary jaw, said movable jaw having an elongated shank received through the aperture in said lug, said means including an actuating lever pivotally secured at one end to said handle, said shank having a threaded free end portion, a bifurcated adjustment link pivotally secured at one end to an intermediate portion of said lever, the threaded end portion fitting telescopically and slidably between the furcations on said link, an adjusting nut carried by said furcations and operably connected with said threaded end portion of said shank for varying the bite between said jaws, and a lock nut also threaded on the threaded portion of said shank for selectively engaging said lug and limiting the spacing between said jaws.

2. A combination tool comprising an elongated handle having a stationary jaw at one end, a movable jaw movable toward and away from said stationary jaw, means for moving said movable jaw, said handle having an inverted U-shaped lug adjacent said stationary jaw, said movable jaw having an elongated shank received through the space between the limbs of said lug, said means ineluding an actuating lever pivotally secured at one end to said handle, said shank having a threaded free end portion, an adjustment link pivotally secured at one end to an intermediate portion of said lever and having its other end bifurcated and providing furcations straddling the free end portion of said shank, an adjusting nut carried by said furcations and engaged on the free end portion of said shank for varying the bite between the jaws.

3. A combination tool comprising an elongated handle channel-shaped in cross-section and embodying spaced parallel walls having extended portions at one end formed with an integral member defining a relatively stationary jaw, apin fixed in said extended wall portions and spaced from a cooperating surface of said jaw and providing a guide, a relatively movable jaw movable toward and from said stationary jaw and having a laterally disposed shank passing between the extended portions of the walls and also through and beyond said guide and having a free screw-threaded end portion, an actuating lever having an end portion pivotally mounted between intermediate portions of the walls of said channel shaped handle, a link having one end pivotally connected to an intermediate portion of said lever and operable in unison with the lever, said link having its opposite end bifurcated and defining a pair of elongate spaced furcations, the screwthreaded end of said shank being operably mounted be tween said furcations, an adjusting nut having screwthreaded connection with said shank and having portions embracing and rotatable on intermediate portions of said furcations, the extended portions of said walls having an integral inverted U-shaped member saddling over the intermediate portion of said shank, and a-lock nut also carried by the screw-threaded portion of said shank and adapted to abut said U-shaped member.

References Cited inthe file of this patent UNITED STATES PATENTS 112,109 Beach Feb. 28, 1871 411,502 Hodge Sept. 24, 1889 490,789 Huston Jan. 31, 1893 539,012 Smith May 7, 1895 1,380,044 Davis May 31, 1921 1,697,535 McGill Jan. 1, 1929 1,803,198 Maris Apr. 28, 1931