|Publication number||US2498465 A|
|Publication date||Feb 21, 1950|
|Filing date||Feb 12, 1948|
|Priority date||Feb 12, 1948|
|Publication number||US 2498465 A, US 2498465A, US-A-2498465, US2498465 A, US2498465A|
|Inventors||Thomas James M|
|Original Assignee||Thomas James M|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (6), Referenced by (20), Classifications (13)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Feb. 21, 1950 J M THOMAS 2,498,465
EXTENSION DRIVE-SHAFT AND HANDLE-GRIP FOR ROTATABLE AND ANGULARLY ADJUSTABLE TOOLS Filed Feb. 12, 1948 J 2 Sheets-Sheet 1 Fig.3.
James M. Thomas INVENTOR.
J. M. THOMAS ,498,45 EXTENSION DRIVE-SHAFT AND HANDLE-GRIP FOR ROTATABLE AND ANGULARLY ADJUSTABLE TOOLS 2 Sheets-Sheet 2 Feb. 21, 1950 Filed Feb. 12, 1948 James M. Thomas INVENTOR. 4016:
WW @Mg Patented Feb. 21, 1950 UNITED *EXTENSION DRIVE SHAFT AND, iHANDLE GRIPFOR ROTATABLE AND ANGULARLY *ADJUSTABLETOOLS 1 Claim. 1
This invention Jrelates' to "new and useful improvementsiin wrenches and "theaprimary object of the :present invention is'to provide-"a :wrench bar inclu'ding'a tooliengaging; element and nov'el and improved means for adjusting the tool engaging element at selected angles'relative' tothe wrench bar," for use" in removing nuts or' the like -which are disposed insrestricte'd areas which are difficult to reachiiby soeketwrenches, or the-like.
Another objectiof the :present invention is to provide-a wrench includingzaatool engaging member and embodying novel I andimproved :means :for; retaining the tool engaging 'membertsat a selected-anglerand for rotating theltool engaging member in a convenient manner by an operator. Another important object of the invention is to provide a wrench so designed as to permit, a
mechanicis hands to .be unobstructed and clear from the work element in close places, thereby enabling thesmechanic to work with-better-vision 1 ber an' actuating bar connected .to the 'tool engaging member, and novel andimproved removable lever means for increasing the length of the present wrench and for. effecting-a rotation of the actuating member in places where the normal ,lengthof the wrench is'impractical and inade- .quate.
A still further aim ofthe present invention is .to provide a wrench that isisimple and,practica1 in\ construction, strongand reliable inluse, small .and compact in structure, neat and attractiveiin appearance, relatively inexpensive to manufacture, and otherwise well adapted for the purposes for which the same is intended.
Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:
Figure l is a fragmentary side elevational view of the wrench constructed in accordance with the present invention, the extension removed therefrom, and showing the tool engaging member in a raised position;
Figure 2 is a fragmentary side elevational view of the present wrench showing the tool engaging member in an inclined and partially lowered position, and with parts of the wrench broken away and shown in section;
Figure 3 is a fragmentary bottom view as indi- LE2 "ea-ted by the arrows'on the line 3'-3 of Fig ure l; -Fig-ure 4 is' a' transverse vertical sectional view taken-substantially--on the plane of .theasection 'line 4--'4 of Figure fl 5 l1"ig-1;lre'5 'isa fragmentary 'side elevationalwiew of the present wrench? in- -slightlymo'cl ified form;
Figure ii is a fragmentary" longitudinal hori- "zontal sectional viewitaken substantial-1y: onithe plane of section line 6- 6 of Figure'b;
Figure- 7- isa view similar to" Figure 5,4an'd showing tha'removame lever extension applied thereto and,
*Figure 'ii is a perspective-view Ofitheremovable lever extension usedin cor'ljunction'withthe pres- -ent invention.
Re'ferring now to -*the drawings in detailparid *more particularly to'iE'igures 1 4 inclusive,:where- 'in for' the purpose (if-illustration there is disclosed a prferrederfibodiment=of' the present invention, the numeral l 0 represent :a tubular: guide-sleeve which -is integrally formed with an enlarged cylindrical hand gripi 2 at one end.
slid'ab'ly and rotatably positioned in' the guide "sleeve- Im-i-s arr-actuatingbar or shaft l 4,:the1for- "w'ard end l a andtrear end 1-6 ofwhich project outwardly from theguidesleeve land the handgrip I2. Fixed on therean end YB-Ofthe'actuafting bar M by any suitablemeans, is a 'preferabl annular hand gripping knob 20 havingI-an ean-n-uiar :recess 22 vin one end for engaging a "socket element-'24 integrally formed with the rear end 1 86fthe-"actuatingbar l 4.
Secured in -ausual mannerto th'e forward end 1 8 of' the a-ctuatingi'bar I4, is a-conventiona1 =sing1e t'miVGI-SQI'JOiHfiZG; oneend-"ZB of which is "integrally formed with -the enlarged annular head portion 30 of a tool engaging lug 32. An annular bearing surface 34 integrally formed with the lug 32 is disposed between the head portion 30 and the lug 32 and removably engages a fixed thrust or stop collar 36. Disposed between the stop collar 36 and the end 28 of the universal joint 26, is a bearing plate 38 having a central opening that rotatably receives the head portion 30 of the tool engaging lug 32. This bearing plate 38 is provided with an integral attaching ear 40 which is pivotally secured by a pin or the like 42 to the lower forward ends 44 of a pair of spaced parallel links 46, the rear ends 48 50 of which are pivoted on opposite sides of a rigid attaching ear 5!) depending from the guide sleeve III, by a pivot pin 52. I
In practical use of the device thus described in Figures 1-4 inclusive, by holding the handgrip l2 fixed and pushing the hand receiving grees and forty-five degrees in the form of the invention shown in Figures 1-4inc1usive.
By rotating the knob 20, the actuating bar I4 will also be rotated to effect a rotation of thelug 32 and the suitable tool which is frictionally retained on said lug 32. 1
Reference is now directed to Figures 5 and 6,
wherein there is disclosed the present invention ignated generally by the numeral I8, includes an auxiliary guide sleeve 80 that rotatably and slidably supports an auxiliary actuating bar 82 having a socket engaging forward end portion 84 that frictionally engages the socket, either 24 or 86, formed at the rear ends of the actuating bars l4 and 54.
Rigidly secured to the auxiliary guide sleeve BI], is the angulated end 88 of an arcuate connecting arm 90 having a socket engaging lug 92 formed at its free end that frictionally engages sockets 94 which are integrally formed with the guide sleeves l8 and 56.
in slightly modified form. In this embodiment,;
the numeral 54 represents the actuating bar or shaft which is slidably and rotatably mounted in a tubular guide sleeve 56 having a hand engaging grip 58 integrally formed at one end.
Removably secured to the actuating bar 54, is a usual, double universal joint 68, an outer section "62 of which is integrally formed with an en- 'larged head portion 63 of a tool engaging lug 64.
The head portion of the lug 64 is rotatably mounted in an opening formed in a bearing plate 66 which is provided with a bifurcated extension 68 that supports a pivot pinlll. This pin 10 is pivoted to the forward free end 12 of a downwardly and forwardly inclined thrust arm 14 that is rigidly carried by the guide sleeve 56. 1
In practical use of this modified form of the invention, as shown in Figures 5 and 6, the actuating bar 54 is pushed forwardly by a hand grip 76 carried by 'said bar 54, and the guide sleeve 56 is held fixed so that the lug 54 will be pivoted relative to the arm 14 a selected angle, between the limits of zero degrees and ninety degrees. By rotating the grip 16, the bar 54 and lug 64will likewise be rotated to effect rotation of a suitable tool or socket member which is positioned on the lug 64 thus permitting the convenient removal of nuts or the like with the tool engaging member disposed at a selected angle relative to the longitudinal axis of the actuating bar v54.
Reference is now directed to Figures 7 and 8, wherein there is disclosed the removable extension lever which is employed in conjunction with the present wrench, either the preferred form of the wrench shown in Figures 1-4 inclusive or the modified embodiment of the invention as shown in Figures 5 and 6. This extension which is des- Fixed on a rear socket end 96 of the auxiliary actuating bar 82, is a knob 98 which may be conveniently rotated for effecting a rotation of either the bar [4 or 54, depending on which embodiment of the invention-the present auxiliary or lever extension is applied.
It is noted that the auxiliary lever attachment 18 which is shown in Figures 7 and 8, is so designed as to facilitate the same to be quickly applied to or removed from either of the embodiments of the wrench described and shown.
qHaving described the invention, what claimed as new is:
An extension handle and drive for a tool comprising a main guide sleeve, a shaft slidably and rotatably mounted in said main guide sleeve, tool engaging means pivotally connected to said main guide sleeve and to said shaft for movement between positions coaxial, and angular to, said shaft, the angular disposition of said tool engaging means relative to said shaft being varied by relative sliding movement between said shaft and said main guide sleeve, a removable auxiliary guide sleeve mounted on said main guide sleeve in coaxial and spaced relation thereto, and means slidable and rotatable in said auxiliary guide sleeve and connected to said shaft for rotating said shaft and tool engaging means.
JAMES M. THOMAS.
REFERENCES CITED UNITED STATES PATENTS Number Name Date 404,167 Burtis May 28, 1889 444,111 Shea et a1. Jan. 6, 1891 921,840 Jacobs May 18,1909
1,239,847 Townill Sept. 11, 1917 1,537,657 Burch May 12, 1925 1,628,553 Owens May 10, 1927
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|U.S. Classification||81/177.7, 81/177.75, 464/117, 403/57, 403/59|
|International Classification||B25G1/00, B25G1/06, B25B13/00, B25B13/48|
|Cooperative Classification||B25G1/063, B25B13/481|
|European Classification||B25B13/48B, B25G1/06S|