US2020242A

US2020242A - Swivel head tool

Info

Publication number: US2020242A
Application number: US226A
Authority: US
Inventors: John W Geddes
Original assignee: HK Porter Inc
Current assignee: HK Porter Inc
Priority date: 1935-01-03
Filing date: 1935-01-03
Publication date: 1935-11-05
Anticipated expiration: 1952-11-05

Description

Nov. 5, 1935. J w GEDDES 2,020,242

swivEL HEAD TOOL Filed Jan. 3, 1955 Invenfon- Jbhn W aeddea, Qya34 M/ M Patented Nov. 5, 1935 UNITED STATES ATENT orrisE SWIVEL HEAD TOOL of Massachusetts Application January 3, 1935, Serial No. 226

13 Claims.

This invention relates to lever-operated tools, of whicha bolt clipper may be considered as a typical example, and more particularly to tools in which the jaws may be placed. in various angular positions relative to the operating handle system. A tool of this general type is disclosed in United States patent to Sweet 873,333 and more recently they have been practically utilized in substantially the form shown in the patent to Lawson 1,959,587. The object of the present invention is to provide a simple and effective construction for a tool of this type having various advantages which facilitate the manufacture thereof andmake the use thereof more convenient, as will appear to those skilled in the art from the following description taken in connection with the accompanying drawing, wherein:-

' Fig. 1 is a partial plan of'a bolt clipper illustrative of the principles of my invention;

Fig. 2 is a side view thereof;

Fig. 3 is an enlarged section on the line 33 of Fig. 1; and

Fig. 4 is a perspective of one of the parts.

Referring to the drawing, I have there shown a bolt clipper embodying generally a jaw lever system and an actuating handle lever system. The actuating lever system comprises a handle lever mechanism proper which includes the long handles 5 pivoted together at l and adapted as they are operated to move towards or from each other points corresponding to the position of the pins 9, these points herein being located on adjusting sections ll rigidly but adjustably secured to the handle levers. The construction of the adjusting sections herein superficially illustrated is that more fully disclosedin the patent to Porter 1,874,616 and requires no extensive description herein as the handle levers 5 and adjusting sections ll might be merged as unitary parts so far as the principles of the present invention are concerned.

Herein the lever system is such that the lever mechanism efiects a parallel movement and for this purpose the sections ll carry on the pins 9 blocks I3, shown separately in Fig. 4, whichherein are duplicates in construction but reversed in position. These blocks l3, as best seen in Figs. 2 and 4, may be recessed at I5 to receive the ears Ila of theadjusting sections and each is provided on one side with a guideway I1 having overhanging flanges I9 adapted to slidably receive a bar 2| fixed to a recess 23 on the opposite block. Herein the pins 9 not only pivotally secure the blocks l5 to the ears Ha but serve to clamp the bars 2| in the recesses 23, the pins terminating so as to leave the guideway I! at the opposite face of the block unobstructed to receive the bar 2i extending from the companion block. The blocks and bars thus form slides which telescope and as the handle levers are 5 operated the blocks move parallel'to one another in the plane of the paper viewing Fig. 1.

The jaw lever system is attached to'the blocks it to be actuated by them in their movement. Herein I show jaw levers or blades 25 of conven- 10 tional form such as are used in known types of bolt clippers pivotally related to each other, herein by being pivoted to the connecting straps 21, equal and opposite movement being enforced by the ge'ar'teeth 29. Attached to the usual pivot holes at the inner ends of these blades by means of bolts 3i and further secured by set screws 33 are sections 35 embracing the lower ends of the blades 25 and having depending portions 31 constituting in effect the tails of the jaw levers. Abutments 39 on the blocks l3, herein shown as projecting upwardly therefrom, and moving parallel to one another with the blocks may be received between the tail portions 31 of the jaw levers and a connection is provided therebetween permitting the adjustment of the jaw levers to various angular positions relative to the plane of the handle levers, as indicated in Fig. 2, and also permitting the operating swinging movement of the jaws. For this purpose the joints embody mating spherical surfaces on the opposed parts and herein the opposed faces of the abutments 39 and the tail portions 31 are provided with shallow recesses of spherical contour but in extent less than hemispheres, which receive interposed balls ll. on which at least one of the parts turns. Herein I have shown entirely separate and independent balls ii. To hold the parts of the joint together and to enforce movement of the jaw levers in opening I may utilize members attached to the parts carrying one element of the joint and engaging the companion element at the opposite side and I herein show keepers ea in the form of short bars secured to and extending upwardly from the blocks l3 and engaging the outer surfaces of the tails 3'5 of the jaw levers at points diametrical to the balls 4|, that is, in the line of their centers. The outer surfaces of the..tails.3l of the jaw levers may be rounded off spherically, as shown, to permit the use of rigid keeper bars while permitting operating movement of the jaw levers in their plane or adjusting movement thereof angularly about the line of centers, which in the construction shown 55 is parallel to the line along which the blocks I3 approach and recede from each other.

It will be understood that the head or jaw lever system of the tool may be swung as a whole about the line of centers of the balls 4| to the desired angular position relative to the plane of the handle levers, as indicated in Fig. 2 by way of example by the showing of a dotted line position, and that the tool may be operated in such angular position.

In the preferred embodiment of the invention herein shown one of the lever systems, herein the handle lever system, comprising the blocks I3, operates with a parallel motion. As a result of this construction, whatever the angular position of the head, there is no wringing motion in the ball joint as the tool is operated in its cutting movement, a result not hitherto obtained in tools having angularly adjustable heads. Moreover, referring to Fig. 1, on account of the parallel movement of the abutments 39 it is unnecessary to provide any scope of movement in the joints on account of the movement of the handles and a particularly compact construction at the joint is provided for. The construction herein utilized for swivellingly connecting the jaw system and lever system also makes for compactness and simplicity in a tool of the swivel head type and gives freedom and amplitude of motion since it is not necessary to retain the ball by a socket embracing a diametral plane thereof.

I am aware that the invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and I therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive; reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

I claim:

1. A tool of the class described comprising pivotally related jaw levers and an actuating lever system comprising parts arranged to move parallel to one another in a plane on operation of said system, the tails of the jaw levers having a pivotal connection to said parts permitting them to be adjusted angularly relative to such plane.

2. A tool of the class described comprising a handle lever mechanism, a pair of interengaging slides arranged for relative telescoping movement thereby and pivotally related jaw levers connected respectively to said slides by joints permitting them to be swung about an axis parallel to the line of movement of said slides.

3. A tool of the class described comprising a handle lever mechanism, a pair of interengaging slides arranged for relative telescoping movement thereby, abutments carried by the slides, pivotally related jaw members having tails overlying said abutments and bearings between said abutments and lever tails comprising mating spherical surfaces about which at least one of the parts may turn.

4. In a tool a handle lever mechanism, a pair of blocks pivoted thereto to be moved thereby, means for interengaging the blocks for sliding movement along a, line parallel to the line connecting the pivots, jaw levers and means for adjustably connecting them to the blocks to permit their operating plane to be positioned at variant angles to the operating plane of the handle lever mechanism.

5. A tool of the class described comprising interpivoted handle levers, interpivoted jaw levers, a pair of blocks pivoted to one set of levers, means governing their movement effective to cause them to move along a line parallel to the line connecting their pivots as the associated levers swing relatively and means for adjustably 5 connecting the other set of levers to the blocks permitting the positioning of the sets of levers in variant intersecting planes.

6. A tool of the class described comprising interpivoted handle levers, interpivoted jaw le- \0 vers, a pair of blocks pivoted to one set of levers, means interengaging the blocks for relative sliding movement along a line parallel to the line connecting their pivots as the associated levers swing relatively and means for adjustably connecting the other set of levers to the blocks permitting the positioning of the sets of levers in variant intersecting planes.

' 7. A tool of the class described comprising an actuating lever system comprising abutments arranged to move parallel to one another in a plane on operation of the system, pivotally related jaw levers having tails overlying the abutments, joints between the opposed surfaces of the parts comprising mated spherical surfaces and including a female portion not greater than a hemisphere in extent and about which at least one of the parts is adapted to turn and keepers each carried by one of the joined elements overlying the opposite side of the cooperating element to hold the elements of the joint engaged.

8. A tool of the class described comprising an actuating lever system comprising abutments arranged to move parallel to one another in a plane A on operation of the system, pivotally related jaw levers having tails overlying the abutments, joints between the opposed surfaces of the parts comprising mating spherical surfaces in themselves freely separable about which at least one of the parts is adapted to turn and keepers each carried by one of the joined elements overlying the opposite side of the cooperating element to hold the elements of the joint engaged.

9. A tool of the class described comprising an actuating lever system comprising abutments arranged to move parallel to one another in a plane on operation of the system, pivotally related jaw levers having tails overlying the abutments, joints between the opposed surfacesof the parts comprising mating spherical surfaces in themselves freely separable about which at least one of the parts is adapted to turn, the opposite sides of one of the joined parts' of each pair being rounded concentric with said surface and keep-: ers each carried by the cooperating element and overlying said surfaces to hold the elements of the joint engaged.

10. A tool of the class described comprising interpivoted handle levers, interpivoted jaw levers, a pair of blocks pivoted to one set of levers, means governing their movement effective to cause them to move along a line parallel to the line connecting their pivots as the associated levers swing relatively, joints between the other set of levers and the blocks comprising mating spherical surfaces in themselves freely separable about which at least one of the parts is adapted to turn and keepers each carried by one of the joined elements overlying the opposite side of the cooperating ele-: ment to hold the elements of the joint engaged.

11. A tool of the class described comprising an actuating lever system comprising abutments adapted to move towards and from one another on operation of said system, pivotally related jaw. levers having tails overlying said abutments, the 7 Opposed surfaces of said abutments and tails having recesses less than a hemisphere in extent, a ball received in said recesses on which at least one of the parts is adapted to turn, and keepers each carried by one of the joined elements overlying the opposite sides of the cooperating element and engaging the same substantially diametrically of the balls.

12. A tool of the class described comprising an actuating lever system comprising abutments arranged to move parallel to one another in a plane on operation of said system, pivotally related jaw levers having tails overlying said abutments, the opposed surfaces of said abutments-and tails having recesses less than a hemisphere in extent, a separate complete ball received in the recesses and keepers each carried by one of the joined elements overlying the opposite side of the cooperating element to hold the joints engaged.

13. A tool of the class described comprising a handle lever mechanism, a pair of interengaging slides arranged for relative telescoping movement thereby, abutments carried bythe slides, pivotally related jaw members having tails overlying said abutments and bearings between said abutments and lever tails comprising mating spherical surfaces about which at least one of the 10 parts may turn, the outer portions of one of the joined parts being rounded, and means carried by the others of the joined parts overlying said outer portion in diametrical alignment with the spherical surfaces to hold the joints together.

JOHN W. GEDDES.