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Publication numberUS1324258 A
Publication typeGrant
Publication dateDec 9, 1919
Filing dateMar 24, 1919
Publication numberUS 1324258 A, US 1324258A, US-A-1324258, US1324258 A, US1324258A
InventorsFredrick A. Lewis
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1324258 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




1,324,258. Patented Dee. 9,1919.



Specicaton of Letters Patent.

Patented Dec. 9, 1919.

Application led March 24, 1919. Serial No. 284,765.

To aZZ whom it may concern:

'Be it known that I, FREDRIGK A. LEWIS, a citizen of the United States, and a resident of Los Angeles, in the county of Los Angeles, State of California, have invented certain new and useful Improvements in Hand- Tools, of which the following is a specification.

My invention relates primarily to a hand tool known as the ratchet type usually supplied with a multiplicity of diiierent types of tools for use therewith, which tools are adapted to be detachably mounted in the head of the tool when positioned for use, and the prime object thereof is to provide a tool of the character above described having an adjustable head whereby the device may be used in close quarters, such as in corners, against partitions and the like, or it may be used in the ordinary manner.

Other objects and advantages will appear hereinafter and while I have shown and will describe m preferred form of my invention it will e understood that I do not limit myself to such preferred form but that various changes and adaptations may be made therein without departing from the spirit of my invention.

In the drawings accompanying and formin a part of this ap lication:

igure 1 is a longltudinal section, partly in elevation, of my invention.

Fig. 2 is a sectional elevation of a portion of Fig. 1, at a right angle thereto.

Fig. 3 is an elevation of Fig. 2.

FFig. 4 is a section on the line L1--4 of Fig. 5 is a perspective view of a portion of my device.

Fig. 6 is a side elevation of the lower portion of Fig. 1.

Fig. 7 is a front elevation of the lower portion of Fig. 1, showing the same in its adjustable positlon.

Fig. 8 is an enlarged sectional detail of a portion of my device.

Referring to the drawings m device comprises a c lindrical body mem er 10 on the upper en of which is revolubly mounted a handle member 11 closed at its upper end by a detachable cap 12.

Extending longitudinally of members 10 and 11 is a spindle 13 revolubly mounted at its upper end in a bearing 14 mounted in the upper end of handle member 11, which bearing is provided with a downwardly exyoke 31.

tending hub 15. Revolubly mounted upon the upper end of member 10 within handle 11 is a tube member 16 the upper end of which is rigidly secured to hub 15 of bearing member 14. A collar 17 rigidlly connected to tube 16 rests upon the upper end of member 1.0 and serves to hold said tube in position. Rigidly mounted upon spindle 13 within tube 16 are ratchet wheels 18 and 19 which are mounted opposed to each other, thatis, right and left, and mounted in the outer wall of tube 16 are opposed pawls 20 and 21 adapted for engagement with said ratchets. These pawls are substantially L- shaped in top plan and are mounted in openings 22 and 23 cu't in tube 16. Extending outwardly from the outer wall of tube 16 at each side of openings 22 and 23 are retaining strips 24 and 25 which serve to confine pawls 20 and 21 within said openings. Slidably mounted upon the outer side of tube 16 between strips 24 and 25 to slide longitudinally is a pawl operating member 26 provided on its outer face with a projecting knob 27, which knob projects through a rectangular opening 28 in handle member 11. Secured to the underside of member 26 centrall thereof is a flexible pawl depressing mem er 29 of a length and configuration to hold one pawl depressed and the other elevated alternately, so that when member 26 is moved in one direction one pawl will be locked in engagement with its ratchet while the other will be locked out of engagement with its ratchet and vice versa. Rigidly mounted upon the lower end of member 10 is a yoke 30 the arms of which extend downwardly and in the free ends of said yoke are pivotally mounted the free ends of an upwardly extending yoke 31.

Extending transversely through the contacting arms of yokes 30 and 31 is a pintle bolt 32, one end of which is rigidly secured in one of the arms of yoke 30 by means of pin 33 and the other end terminates in a T- shaped head 34 a short distance beyond the outer face of the other arm of yoke 30 for a purpose hereafter explained. Loosel)T mounted upon bolt 32 between the arms of said yokes is a sleeve 32*1 upon which are revolubly mounted opposed bevel gears 35 and 36 which gears mesh with gears 37 and 38, gear 37 being rigidly mounted upon the lower end of splndle 13 and gear 38 being revolubly mounted in the body portion of A tapered rectangular socket is provided in the hub 39 of gear 38 for the reception of a screw driver 40 or like tool. Revolubly mounted upon pintle bolt 32 between head 34 and the hub of gear 36 is an adjusting member 41 the outer end of which terminates in opposed cam faces 42 and 43 adapted to engage the under side of head 34 when rotated and be caused to slide along bolt 32. Coiled around sleeve 32 between the opposed faces of gears 35 and 36 is a coil spring 44 which acts to normally force y gea-r 36 out of engagement with gears 37 and 38. Extending upwardly from the end of member 41 is an operatmg arm 45 in the free end of which is pivotally mounted a stop 46 adapted to engage teeth 47 in yoke 30 and lock said arm against movement.

In the operation of my device the head is first adjusted to extend in the desired direction .in the following manner:

Dog 46 is operated to release arm 45 which is then moved to rotate adjusting member 41 thereby permitting spring 44 to force gear 361 out of engagement with gears 37 and 38 when the lower yoke may be moved to extend in the desired position. The arm is then rotated to its normal position when the yoke is again locked against movement. The pawl operating member is then moved to the position necessary to rotate the spindle in the desired direction and the device is ready for use.

Having described my invention what I claim is:

l. In a hand tool a head therefor comprising a pair of opposed yokes having their free ends pivotally mounted together; a pair of opposed bevel gears loosely mounted on said pivot between the arms of said yokes; a spring coiled around said pivot between the opposed faces of said gears; and a cam member' rotatively mounted on said pivot between the outer face of one of said gears and the head of said pivot whereby when the same is rotated said gears will be moved toward each other; a bevel gear revolubly mounted in the lowermost one of said yokes in mesh with said first mentioned gears; and a bevel gear mounted on the lower end of the hand tool spindle in mesh with said first mentioned gears whereby when said spindle is rotated all of said gears will be caused to rotate.

2. A head for hand tools comprising a pair of oppositely positioned yokes pivotally connected together at their free ends; one of said yokes, being rigidly connected intermediate its arms to the body portion of the hand tool; a pintle bolt connecting the free ends of said yokes having a head; a sleeve loosely mounted on said pintle bolt; a pair of opposed bevel gears loosely mounted on said sleeve; a spring coiled around said sleeve between said gears adapted to force the same apart; a cam member revolubly mounted on said pintle bolt between one of said gears and said head adapted when rotated to force said gears toward each other against said spring; means to lock said cam member in any desired position; a bevel gear normally meshing with both of said first mentioned bevel gears rigidly mounted upon the spindle of the hand tool; a bevel gear rotatively mounted in the other one of said yokes intermediate its arms normally meshing with both said first mentioned gears; and a tool detachably mounted in said last gear.

In witness that I claim the foregoing I have hereunto subscribed my name this 15th day of March, 1919.


Referenced by
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US3035451 *Jan 7, 1959May 22, 1962Connell OHand powered rotary tool
US5784934 *Jan 30, 1997Jul 28, 1998Shinano Pneumatic Industries, Inc.Ratchet wrench with pivotable head
US6311583Apr 13, 2000Nov 6, 2001S. P. Air Kabusiki KaishaRatchet wrench with pivotable head
US7104165 *Jan 16, 2004Sep 12, 2006Te-Chen ChuSwing head structure of wrench with two kinds of torque output
US7400106Nov 3, 2006Jul 15, 2008Robert Bosch GmbhMethod and apparatus for providing torque limit feedback in a power drill
US7487844Nov 3, 2006Feb 10, 2009Robert Bosch GmbhDrill with solid state speed control
US7708085Nov 3, 2006May 4, 2010Robert Bosch GmbhArticulating drill with optical speed control and method of operation
US7861796Feb 9, 2009Jan 4, 2011Robert Bosch GmbhMethod of operating drill with solid state speed control
US7926585Nov 3, 2006Apr 19, 2011Robert Bosch GmbhMethod and apparatus for an articulating drill
US8322456Nov 3, 2006Dec 4, 2012Robert Bosch GmbhArticulating drill with integrated circuit board and method of operation
US8480453Jan 11, 2007Jul 9, 2013Sp Air Kabushiki KaishaDie grinder with rotatable head
US8561717Nov 6, 2012Oct 22, 2013Robert Bosch GmbhArticulating drill with integrated circuit board and method of operation
U.S. Classification81/57.26, 192/44, 74/385, 81/62
Cooperative ClassificationB25B17/00