US1752074A

US1752074A - Spanner wrench

Info

Publication number: US1752074A
Application number: US335249A
Authority: US
Inventors: Gideon R Gagne
Original assignee: BLUE POINT TOOL Co
Current assignee: BLUE POINT TOOL Co
Priority date: 1929-01-26
Filing date: 1929-01-26
Publication date: 1930-03-25
Anticipated expiration: 1947-03-25

Description

March 25, 1930.

vgs. R. GAGNE SPANNER WRENCH FiLed Jan. 26, 1929 INVENTOR BY Q, I

ATTORNEY teeth.

Patented Mar. 25, 1930 UNITED STATES PATENT OFFICE GIDEON R. GAGNE, OF MILVIAUKEE, \VISCONSIN, ASSIGNOR TO BLUE POINT TOOL COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF ILLINOIS SPQANNER WRENCH Application filed January 26, 1929. Serial No. 335,249.

The invention relates to spanner wrenches.

In the usual spanner wrenches either a single tooth is provided, associated with a round face, in which event the wrench can be used only for turning a nut in one direction at a single setting or a pair of diametrically disposed teeth or projections are provided to closely interfit with diametrically disposed recesses in the nut, in which case the wrench can only be applied by moving it laterally and the wrench cannot be used in small spaces where the range of throw is limited or where the cramped space prevents it being applied. The object of the present invention is to provide a spanner wrench for toothed nuts which may be directly applied to the nut by movement into engagement therewith at right angles to its axis and will operate to turn the nut in either direction at a single setting and which may be used in cramped or small spaces where the throw is limited.

The invention further consists in the several features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings Fig. 1 is a side elevation view of a wrench embodying the invention;

Fig. 2 is a plan view thereof.

Referring to the drawings the numeral 3 designates the shank and 4 the head of the wrench.

The head 4 is of arcuate formation pro vided with inwardly directed, spaced projec' tions 5 and 6 with curved nut-engaging surfaces 7 and 8. The inner sides 9 of each projection are inclined at a slight angle, preferably about twelve degrees, this angle being referred to the center about which the nut 10 turns.

The jaws or projections 5 and 6 are spaced apart a little more than the space between only two of the teeth 11 of the nut 10, the clearance space being indicated at 12, and each jaw or projection is of a width equal to about half of the space between adjacent The result of this construction is that the wrench may be applied directly to the nut by a movement at right angles to the shaft and will operate to-turn the nut in either direction at a single setting, Fig. 1 showing the wrench in full lines applied for turning the nut in a counter-clockwise direction, while the dotted lines show the position of the wrench for turning the nut in the opposite direction. It also provides for turning the nut through a wide range even though the field of operation is limited, for example as shown in Fig. 1, where the wrench is shown as applied to the stuffing box gland nut 10 of a water pump, which pump has a trough portion 13 close to and surounding a portion of the nut.

What I claim as my invention is:

1. A spanner wrench for toothed nuts having a wrench head provided with spaced projections of less width than the space between adjacent teeth of the nut, whereby said wrench is applied directly to the nut by movement at right angles to its axis, and provided with tooth-end-engaging surfaces adjacent said projections.

2. In a spanner wrench for toothed nuts, a wrench head having projections spaced to encompass two teeth only of the nut and have movement in the space between adjacent teeth of the nut, and provided with toothend-engaging surfaces adjacent said projections.

3. In a spanner wrench for toothed nuts, awrench head having projections spaced to encompass two teeth only of the nut and have movement in the space between adjacent teeth of the nut, the inner face of each proj ection being inclined at an angle of approximately twelve degrees with reference to the center of rotation of the wrench, said head being provided with tooth-end-engaging surfaces adjacent said projections.

t. A spanner wrench for turning nuts, comprising a wrench head having spaced nut engaging means for registry with correspondingly spaced complemental means on a nut to effect the turning thereof, there being some clearance between said complemental means on said wrench head and nut to permit partial rotation therebetween, and nut periphery engaging surfaces associated with said wrench head nut engaging means to serve as a bearing surface in continuity there- With.

5. A spanner Wrench for turning nuts, comprising a Wrench head having spaced nut engaging means for registry With correspondingly spaced complemental means on a nut to effect the turning thereof, there being some clearance between said complemental means on said Wrench head and nut to per- 10 mit partial rotation therebetween, nnt pe riphery engaging surfaces integrally associated With said Wrench head nut engaging means to serve as a bearing surface in continuity therewith, and angular projections on said engaging means inclined to said c0mplemental means to effect a hit ing engagement therewith responsive to turning said Wrench head.

In testimony whereof I affix my signature I GIDEON R. GAGNE.