US1530842A - Adjustable ratchet wrench - Google Patents

Description

March 24, 1925.

F. MA'rousHEK ADJUSTABLE RATCHET WRENCH Filed June z. 1924 Patented Mar. 24,

` FRANK MAroUsHEK, or comme; sourir Dimora ADJUSTABIIE RATCHET wennen.

Application filed June 2,

i all 'wila-.0m if muy Concern.'

lle it known that l. FRANK M'Arousnnfir,

a citizen ot the United States, residing` at Colonie, in thecounty of Tripp and State of South Dakota, .have invente-d certainv new and useful Improvements in Adjustable Ratchet trenches, o't which theV following` is a specification. J f` `My invention relates Ato an Vadjustable wrench provided with a ratchet device Yfor operating the same, said ratchet device bei-ng reversible so that the wrenchk may be used both for right and `left hand work.

The wrench is provided with gripping jaws which may, by a` simple operation, `be to accommodate a bolt head or nut of any size and these ljaws have positive movement toward and away from each other so that the adjustment .of the wrench after having been `set to av certain siZedVnut, for instance. will remain. constant until the wrench reset. j' i In the accompanying. drawing"'oneembodiment ot the 'invention isillustrated and:

Figure 1 is ay top plan view of the wrench,

Figure 2 is a section along' line 2-2 of Figure 1, V

Figure 3 is a section alongl line 3-3 of Figure- 2,

Figure 4 is a section along line 4 4 of Figure 2. showing; one ot the jaws, and

Figure 5 isa view illustrating the sleeve employed for guiding` the jaws. A

In the drawing, the reference numeral represents a handle which is preferably made from suitable wire or metal rod bent double to form handle shanks extending sub-k stantially parallel to each other and provided atl their endswith inturned grippers 11. These `ajrippers are coneshaped and preferably provided witlrknurled surfaces, and are arranged in axial alinement, as best shown in Figure 3. The shanlrs of the handle 10 are held rigidly together by means of a transverse bolt 12 threaded in one oi the Shanks and secured by a lock nut 13.

The reference numeral 14- represents the head of the wrench, which head is provided with a lug' 15 on one side thereof. This lug has axially alined sockets 16 corresponding to the grippers 11 of the handle and when the grippers are inserted inthe sockets 16 and the bolt 12 is tightened7 the handle has a tirm grip on the head and may be set at a suitable ane'le for doing the work, and it 19211.y Serial No.- 717,331.

is evident that. the handle `may be turned up or down in Arelation to the head.

The headV 111 has acylindrical bore 17 in which snugly `but revolubly lits a sleeve 18. Thissleeve has a *collar 19 at one end adapt ed to abut against the top surface 20 of the head and. a. narrow neck 21 projecting' 4through' the under side oft the head, asbest seenA ln Figure 2. Around the lower' edge ci this neck 21 is provided a number off T-slots 22 adapted to engage, in corespondingly vshaped guide arms 23 on the aws 24; These j guide arms are arcuate, as best` seen in Fie .ure'2, extending inwardly in the bore of the head 18g and have their inner ends 25 Vpiv- Voted within an adjusting plu-g,` 2G. The plug' is rin-g shaped and is provided with external threads' adapted to engage corresponding threads 2T in an adjusting nutV 28. fThis nut 28 is revolubly inounted'in the sleeve and engages with its collar 29 the coillar19 of the sleeve. The nut is slightly long {erl than the sleeve 18 so as to permit. the jaws interference by the nut.4 Y w The outer ends of the jaws 24 are pro- VVvided with gripping lingers set substantially at right angles to vthelower Vends of the guide arms It will new be evident that by turning the nut 28 in the sleeve 18, the adjusting' plug 26fmay be advanced or retracted in the nut, at the same time pushing o-ut or drawing liin the. pivoted ends 25 of the jaws to open or close the fingers 30. It will now also be seen that when the adjusting plug' 2G travels downwardly, the T-slo-ts 22 in the sleeve 18 will cooperate. with the arcuate guide arms 23 of the jaws to spread the gripping lingers 30` of the latter' apart and that the opposite taires place when the adjusting plug 26 travels upwardly in the nut,

The sleeve 18 is provided with an annu` lar groove 31 in which ratchet teeth 32 arev furnished and these ratchet teeth are adapt y24k to work freely within the sleeve without I ed to engage with a ratchet dog 33 housed in for the chamber 36. On the outer end of 1 the stem Sfiof the dog 33Vis provided a yoke 39 straddhng the' lug 15 by means of short arms 40. The relative length of they arms 10 is such that the dog can be lifted out of engagement with the ratchet teeth 32 and turned one hundred and eighty degrees in its seat. The slanting surface of the nose of the dog will thus be presented opposite to its first position and the teeth 32 of the sleeve 18 being square on both sides, this will permit reversal of the operation of the handle to the first position of the ratchet dog 38. The dog` holds the revoluble member 18 stationary relative to the head 'during the working stroke of the handle but permits the head to revolve upon the said member during the return stroke of the handle, the jaws 30, of course, through their engagement with the work preventing relative movement of the hollow annular plug and the revoluble member 18. After the hollow annular plug 26 has been set through the application of any turning tool so as to properly adjust the jaws, the engagement of said plug with the sleeve nut 29 performs the function of a lock nut to hold the parts in the position in which they have been set so that the adjustment of the jaws will not be disturbed. o Y

According to the number of gripping jaws 24: provided in the head, the wrench may bel used 0n square, hexagonal, or other shaped nuts.' VIn the drawing, four jaws have been shown which are accordingly adapted to engage a square nut, while. for a hexagonal nut, six jaws would have to be provided.

Having thus described the invention, what I claim is:

1. An adjustable wrench comprising a needs-ia head, a handle on said head, a revoluble member in said head provided with ratchet teeth, a dog in said head engaging said teeth, gripping jaws, and means for adjusting the gap of said jaws; said means including arms on said jaws engaging` corresponding guide elements at the lower end of said revoluble member, a sleeve nut revolubly mounted in said member, and a lhollow annular plug having threaded cngagen'ient with the interior of said sleeve nut and having said arms pivoted to the inner circumference.

2. An adjustable wrench comprising a head, aL handle on said head, a revoluble member in said head provided with ratchet teeth, a dog in said-head engaging said teeth, gripping jaws, and means for adjustingthe gap of said jaws, said handle having shanks terminating with inwardly extending grippers engaging in corresponding sockets in said head, said grippers being tapered and having serrated surfaces. j

i3. yAn adjustable wrench comprising a head, a handle on said head, a revoluble member in said head provided with guide slots in its lower end, means in the head for rotating said member, gripping jaws, arms on said jaws slidably engaging the guide slots in saidrevoluble member, a sleeve nut revolubly mounted in said member, and a hollowlannular plug having threaded engagementV with the bore of said nut, the arms on the jaws having their upper ends pivoted to the inner circumference of the luO.

P Ibn testimony whereof I affix my signature.

` FRANK MAToUsHnK. [as]

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