US2010616A

US2010616A - Tool for rotating screws and other objects

Info

Publication number: US2010616A
Application number: US756643A
Authority: US
Inventors: Walsh Nicholas William John
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-11-22
Filing date: 1934-12-08
Publication date: 1935-08-06
Anticipated expiration: 1952-08-06

Description

NJ w. J. WALSH 2,010,616

TOOL FOR ROTATING SCREWS AND OTHER OBJECTS Filed Dec 8, 1934 INVENT E/ Patented Aug; 6.193s I: 7 l a 8 2 010 516 ,UNlTED 'STATES PATENT OFFlCE 'rooL FOR ROTATING SCREWS AND OTHER OBJECTS.

Nicliolas William John Walsh, Doncaster,

Victoria, Australia Application December 8, 1934, Serial No. 756,643 In Australia November 22, 1932 6 Claims. (01. 145-50) This invention relates to tools of the type in of aspring l2 which is arranged in recesses ll in which the force of a blow is utilized to cause

presthe members

8 and 9. When the members 8 and sure, shock and turning movement to be trans- 9 are spaced apart the maximum distance longirnitted simultaneously for the purpose of turning tudinally the parts ll between recesses l0, and

screws and other objects. Tools of this type the parts ll betwcen recesses ll overlap. 5

are particularly useful for loosening corroded The end 8 of member 8 projects beyond the screws and bolts and for tightening screws in elecend l of easing l and is adapted to carry a suittrical machinery. able fitting as a socket l3 to hold a tool such as The object of this invention is to provide a ascrew-driver bit i l/which may be providedwith 10 compact and efficient tool of the type referred to, a oove NZ1 o be e ga d by a Spring Dressed 10 which does not require special skill to use and stud I3 which is arranged to transmit turning movement The size and shape of head I are variable and in either direction at will, such direction being it may be provided with a transverse hole l5 to determined by preliminary rotation of a handreceive a tommy-bar to assist turning when the piece. tool is used for ordinary twisting purposes. 15

This improved tool includes a tubular hand- In use. end 8-" of the rotatable member 8 is fitted piece and within said handpiece two members on with suitable means to engage the object to be which are co-operating helical faces, one of said turned, for example if the object is a screw havmembers being rotatable relatively to the handing a slotted head a socket as l3 and a screw- 33 piece and the other non-rotatable, the said memdriver bit as [4 is fitted and the end of the bit is bers being normally located by spring means so fitted in the screw slot. The handpiece 1 is then that a primary rotary movement of the handrotated in the direction in which the screw is to piece enables the direction of rotation of the robe turned until the complementary faces I0, tatable member to be determined. ll are in contact. If a right-hand threaded But in order that this invention may be more screw is to be tightened the handpiece is turned 25 readily understood it will now be described with anti-clockwise to the position illustrated in Fig. 4 reference to the accompanying drawing in which: while if such a screw is to be loosened the hand Fig. 1 is a sectional elevation of a tool fitted piece is turned clockwise until the parts are posiwith an adaptor and a screw-driver bit. tioned as in Fig. 2. The head l is then struck Fig. 2 is a diagrammatic view showing the posiwith suitable implement such as a mallet, caus- 30 tion of the parts for transmitting rotary moveing the handpiece 1 and member 9 to move rapment in a counter-clockwise direction. idly and transmitting pressure. shock and turn Fig. 3 is a fragmentary view of parts in Fig. 2 ing movement simultaneously to member 8. Reafter operation. lease of handpiece 1 allows the spring l2 to move Fig.4is a diagrammatic view showing the

posithe members

8 and 9 to normal position after 35 tion of the parts for transmitting rotary move; which further partial rotation of the handpiece ment in a clockwise direction. again locates the parts 8 .and 9 in operative posi- Fig. 5 is a fragmentary view of parts in Fig. 4 tion. A few blows is suflicient to loosen even firmafter operation. ly fixed and corroded screws without damage. If

l is a tubular handpiece having a solid head I a broken or smooth-headed screw or stud is to be 40 and a flanged

end l Members

8 and 9 are arrotated, a bit having a cold-chisel point of suitranged within the handpiece and each said memable form may be employed. If a nut or bolt ber has any suitable number of approximately V- head is to be engaged. a tube spanner socket or shaped recesses I0, I I. Member 8 is rotatable other suitable fitting may be fitted to end a relatively to the handpiece while member 9 is I claim:

fixed against rotation relatively thereto and may 1. A tool for turning screws and the like, combe integral with head l which is connected to the prising a handpiece, a rotatable member and a casing I by a screw thread T and in addition is non-rotatable member in said handpiece, means suitably fixed thereto as by welding. to locate said members in spaced apart positions,

Each face it), I l' respectivelyof recesses l0 and co-operating helical faces on said members 50 and H is helically curved so that when a face ltl whereby when a blow is transmitted to the nonis in contact with a face H and member 9 is rotatable member. the rotatable member is caused moved toward member 8 the latter is partially to transmit pressure. shock and rotary movement rotated. Member 8 is normally located against to a tool connected to it.

an abutment such as a casing flange 1 by means 2. A tool for turning screws and the like comprising a tubular handpiece and within said handpiece a member fixed thereto and another member which is relatively rotatable and movable longitudinally, V-shaped recesses with helical faces on both said members, means to locate said members in spaced apart but inter-engaging position, so that when said handpiece and the non-rotatable member are rotated relatively to the rotatable member co-acting helical faces engage whereby pressure. shock and rotary movement may be transmitted to the rotatable memher, the direction of rotation of the said member being determined by the direction of rotation of the handpiece.

3. A tool as in claim 1 within each said memher a plurality of approximately V-shaped recesses with co-operating helical faces, the projections between the recesses overlapping when said members are in spaced apart position.

4. A tool for turning screws and other rotatable elements comprising a tubular handpiece having a head at one end and a flange at the other end, a member within the handpiece and fixed to said head, a partially rotatable member within the handpiece which is longitudinally s1idable between said flange and the fixed member, spring means to normally locate said slidable member, a pair of V-shaped recesses with helical faces in each said member and projections between said recesses which overlap.

5. A tool as in claim {1 within the head a verse hole to receive a bar.

6. A tool as in claim 4 in which the fixed member is integral with. the' head, and means to connect said head to the casing;

NICHOLAS WILLIAM JOHN WALSH.

trans