US1011726A - Adjustable chock. - Google Patents

Description

O. E. BERRY.

ADJUSTABLE CHUCK.

APPLIOATION FILED 111111 21, 1911.

1,011,726. Patented Dec.12,1911

STATES PATENT OFFICE.

n, BERRY, or soMERvIL E,MASSACHUSETTS.

following; is a specification.

The in'ventiOn relateS to an adjustable chock for boats and other purposes.

The object of thepresent invention is to improve the construction of ehocks for hawser ropes, cables, tow lines and the like,

- and toprovide an adjustable chock, adapted to be readily arranged to form an open or closed chock, and capable of permitting a rope or cable to slide freely through it in either adjustment.

A' further obj'ect 'of the invention is to provide a chock of this character, adapted when closed to effectually prevent a rope or cable from accidentally springing out of engagement with it, and capable ,when in such closed positionof enabling a boat to be securely ftiedto ,awharf, or other fixed obj ect and located above the plane of the deck to which the chock is secured.

Vith these and other objects in view, the invention consists in. the construction and novel combinationo'f'parts hereinafter fully described, illustrated in the accompanying a drawing, and pointed out in the claims heretoappended; it being understood that various changes in the form, proportion,

' size and minor details of" construction,

.within the scope of'the claims, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention. g In the drawing z Figure 1 is a side elevation of an adjustable chock, constructed in accordance with this invention, and shown open. Fig. 2f'is aplan view, the chock'being closed. Fig. 3 is a longitudinal sec tional View on the line 33 of Fig. 2. Fig. 4 is a detail perspective view of the base plate or body. Fig. 5 is a transverse sectional view on the line 5-5 of Fig. 3. Fig. 6 is a similar view on the line 6-6 of Fig. 3.

Like numerals of reference designate corresponding parts in all the figures of the drawing.

In the accompanying drawing in which is illustrated the preferred embodiment of the invention, 1 designates a substantially oblong base late, having-a flat lower face and provided at its ends with perforations Specification of Letters Patent.

Application filed March 21, 1911.

ADJusTABLE oHocK.

Patented Dec. 12, 1911.

Serial No. 616,003.

2 for the reception of bolts, or other suitable fastening meansfor securing the device to the deck or other portion of a boat. The plate or body 1, which is constructed of suitable metal, is provided at one end with a rigid jaw 3, extending upwardly from the base and inwardly over the same and preferably tapered, as clearly shown in Fig. l of the drawing. The outer face of the rigid integral jaw is convex, and the inner face 4 is flared at opposite sides at 5 to permit a rope or cable to run freely through the chock and to avoid presenting sharp edges to the rope or cable. The upper face 6 of the base plate is curved transversely to present a convex face, and mounted upon such convex face and cooperating with the fixed jaw is an adjustable jaw 7, tapered in side elevation and extending upwardly from the base plate and inwardly over the same in the direction of the fixed jaw 3. The base or body of the adjustable jaw 7 is enlarged, and its lower face is curved transversely to present a concave bottom face 8, which conforms to the configuration of the convex upper face 6 of the base plate, asclearly illustrated in Fig. 6 of the drawing. The adjustable jaw is slidable along the base to and from the fixed jaw, and it is adapted to be arranged contiguous to the same to positively confine a rope or cable in the chock, and at the same time permit the said rope or cable to slide freely through the device. lVhen the chock is closed, it will be impossible for a rope, cable, or tow line to become accidentally disengaged from the device. "When the adjustable jaw is open and spaced from the fixed jaw, as illus-' trated in Fig. 1 of the drawing, the device operates simllar toan ordinary open chock, and a rope or cable may be readily introduced into and removed from the space between the jaws 3 and 7.

The adjustable jaw is slidably connected with the base b means of a dove-tailed slide 9, consisting 0 an oppositely beveled block fitted inand slidable along a longitudinal slot 10 of the base plate. The side walls of the slot are upwardly and inwardly 1nclined to correspond with the inclination of the side edges of the dove-tailed slide, which is secured to the bottom of the adjustable jaw by means of a screw 11, piercing the slide and engaging a threaded perforation vl2 of the enlarged bottom portion of the adjustable jaw. The slide is also provided with a rigid. projection 13, fitting in a perforation-14 ofgthe bottom of-the adjustable jaw, whereby the latter is locked against rota'ry movement on the slide.- The 'head of the-screw 11 is counter-sunk in the lowerface of the slide, but any'other suitable means maybe lemployed for securing the slide and the jaw =1 together.. The slide'interlocks 'the adjustable jaw with the base plate and moves in the slot 10 whenfthe. adjustable jawis opened or closed.

The adjustable "jaw is provided with, a gravity catch 15, approximately L-shaped, as clearly shown in Fig.3 of the drawing, and provided adjacent to its angle with a laterally projecting pivot 16, fitted .inspaced bearing recesses 17 locatedfat opposite sides of a slot 18 through which the catch-passes.

.The engaging arm 19 of the catch is'later-f ally enlarged, being, approximately T- shaped, and it operates in an' enla r ed portion-20 of the slot 18, as clearly' s own in Fig. f the drawing. The operating arm, which is longer than the engaging arm, extends outwardly through the slot 18 and has suificient weight toswing' the engaging arm inwardly totthe inner transverse wall oft-heenlarged. portion 20 ofthe slot to a position for engaging opposite notches I 21 and 22 of the base plate. The notches 21 are located at the inner end .of the slot and form shoulders at opposite sides of the same,

and is engaged by the catch when the adjustable jaw is in its. closedposition. The other notches 22 are engaged by the .gravlty catch when the adjustable jaw is moved out- I ward toitsopen position. The shoulders formed by the notches are slightly inclined to enable the gravity catch to be readily The outward pressure or strain on the adlifted outof engagement with the notches.

justable jawfirmlymaintains the catch in engagement with the said notches, so that there is no liability of the adjustable jaw slipping outward accident-ally.

While the adjustable choc-leis designed primarily for use "on boats, it may be advantageou'sly employed for various other 'pur-- poses, as it is adapted to-form a closed rope to release! a rope or c able when desired.- Y

chock or guide and may be quicklyopened Having thus fully described my imrentio'n,'- What I claim as new and ;dcsire to secure by Letters Patent, is V 1. adjustable chock comprising a base plate provided .at .one end with a'. fixed curved jaw, said base plate b ei ng extended beyond the fixed jaw and provided with a longitudinal guiding slot, a curved adjustable jaw slidable along the extended por- .tion of the base plate and movable toward .and from the fixed jaw'so as to provide 21- circular opening when the jaws are closed and an elongated opening when the jaws are open, means operating in the slot for guiding the adjustable jaw, and a device to lock the adjustable jaw ineither'position;

2. An adjustable chock including a base plate provided at one-end with a fixed proecting jaw and having a longitudinal slot at the other end, an adjustable jaw seated.

upon the base plate "and extended toward thev fixed jaw and movable to and from the' same 'to. form an open or closed chock,- a

slide operating in the-slot and interlocked with the base plateand connected with the adjustable jaw, and a catch mounted on the adjustable jaw 'and'arranged "to engage the base plate for lockingthe adjustable jaw.

3. An adjustable chockincluding a base plate provided with a fixed projecting jaw and having a longitudinal slot and provided at opposite sides thereof with notches, an adjustable jaw slidable along the base and provided with a slot, a? slide interlocked with'the walls of the '.longitudinal slot and connected with the adjustable jaw, and a gravity catch fulcrumed in the slot of the adjustable jaw and having an exterior ope n l crating arm, and an interiorly.arrangedjena lock. the adjustable jaw;

gaging arm co-acting with the notches to 4- An adjust-able chock including base plate having a fixed jaw and provided with In testimony, that I claim the foregoing .as my own, I have hereto .aflixed my signaturein the presence of two witnesses.

I oHAn EsE. BERRY. Witnesses: i i

L. G. GREEN, Grouse W. Snow. 7

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