US1795978A - Gallows frame - Google Patents

Description

March l0, 1931. R. F. sYMoNDs 1,795,978

GALLows FRAME l Filed July 5, 1928 2 sheets-sheet 1 A QZ l 4/2 24 14 Vf/v 70E'.

March l0, 1.931. R. F. sYMoNDs GALLOWS FRAME Filed July 5, 1928 2 Sheets-5h66?. 2

Figui Patented Mar. 10, 1931 russa" PATENT GFF'IICE RALPH F. SYMON'DS, OF MABBLEHEAD, MASSACHUSETTS, ASSl'GNOR T NEW ENGLAND TRAWLER EQUIPMENT. 13G., OF EVERETT, MASSACHUSETTS, V(LORIEOEJALT10N' .0F

MASSACHUSETTS f GALLOWS FRAME Application filed July 5,

This invention relates to gallows frames of the typerused on trawling vessels for handlinoand 'towing trawls.

(Iallows frames are usually set-up on the deck of a trawler at either side nearl the rail and are adaptedto be swung outboard to clear the rail when'in use. Each frame carries an upper swivel block over which the towing warp or ground cable leads to the trawl and a lower sheave about which the cable is led to the bollards and the winch.

The duty imposed on gallows framesat sea and the strain upon them is severe'. They are, moreover, Asubjected to destructive conditions'o'f exposure which must be reckoned with in designing a lframe which may be relied upon for long service. With these conditions in view, it isthe object of the present invention toprovide a gallows frame'of a new and improved type, rigid andstrong in construction and yet light enough to be handled conveniently. also been given to the problemof mounting a gallows frame upon the deck of a vessel securely, eliminating all danger Aof its being carried away and at the same time permitting convenient detachment from its mount.- ing when not in use. Tn this connection,an importantfeature of the invention consists in a hinged mounting-for the gallows frame, so designedv that when the frame is swung outboard and in use, the weight thereof and of the tackle and load is carried solidly by shoes or plates designed .for the purpose, as distinguished from the hinge' pin or bearings upon which the frame is carried atv other times. y

In one of its aspects, the present invention consists in agallows frame embodying inits construction structural steel shapes of commercial channels and angle plates. linother feature ofthe invention, accordingly, consists in a gallows frame comprisinga continuous channeliron bent to form two legs converging to a vertex from whichl the swivel block is suspended, and having cross girts se-` cured in place between the legs of the frame and serving as a portion of the mounting of the frame.v y.

These and other features of the invention Consideration hasV 19728. Serial No. 290,459.

will be best understood and appreciated from the following description of a preferred ein bodiment thereof, selected v for purposes of illustration and shown in the accompanying drawings, in which 1 is a view of the gallows frame in front elevation;

Fig. 2 is a view in side elevation; l

Fig. 3 is an inverted plan view; and

F ig. l is a view in side elevation, on ka reduced scale, showing the gallows frame in position upon the deck of a vessel. Y

The main portion of the frame is rformed ofa continuous channel iron 10 shaped Iso that it comprises two legs converging yto a curved vertex. Extending between the lower endsof theflegs is a cross` girt comprising two angle plates ,14 with their `flanges disposed outwardly. The connection ,is

strengthened and the whole'structurevstiffened by corner plates 16, `whichareriveted tothe flanges of the channel iron 10 and to the angle plates le', of the crossgirt. A vcurved reinforcing strap 12 extends over the vertex of the frame and is lriveted to the web :of the channel-'iron 10. `Apair -of transversely disposed angle plates 18 `are vriveted to the lower vface 'of the cross girtangle plates 14 andthe down-turned flange of each of these plates is taperedV outwardly and provided at its deeper or wider end with .afhole for the hinge pin or rod 20. Cooperating angle plates QQarebolted to the declrof the `vessel withtheir upwardly-extending flanges, cor A.

respondingly tapered outwardly and in side surfacefcontact with the `downwardlyfeirtendingfflanges of the angle plateslS. They are also provided with holes for the hinge pin 2O and thus` constitute the stationary elements of a pair of spaced hinges having a common pintle in the rod orpin 20.

It will be apparent that the design of the'V hingeis such'that the tapered loweredge of 'al SS each angle plate flange on the gallows frame rests upon the vweb of the stationaryalgle plate22 on the decl; when the gallows frame is swung outwardly into operative position. Similarly, .the tapering upper edgeof the flange of each stationary or deck langleplatev 22 rests upon the web of the movable angle Ixo.

CTI

notched inte au plate 18. In 'this way, a solid bearing and support oit substantial area'is provided tor carrying the weight or'l the gallowstrame and the load thereon when the latter is swung into its outboard position. `When the gallows frame is swune'v inboard7 as shown in.

Fig. 2, the hinge pin 2O has to carry only the weightot the traine.

A reinforcing plae 2e is riveted to the inboard'side oi the gallows `frame at the vertex thereof, being shaped to trie curved flange of the channel iron and provided with an outwardlv-bent perforated tongue 26 which receives one clevis 2S ot a stay rod 30. The

iate is provided vvith a pair et holes in s ceL ter section to receive the legs ot a staple 32 which passes through a staple plate Se disposed on the outboard iace oit the gallows traine. "lhe upper leg ci the staple is 1e web of the channel iron l() and secured in place by nuts upon its inner ends. The staple is Vtermed with an odset shoulder in its lower to hold the staple plate Se in place and to reinforce it tor carrying the swivel block 38. @hating blocks ll0 are riveted to the flanges oi' the channel iron l0 and have curved outer surfaces across which the cable may be drawn.

The members l-l of the cross girt carry cheelr plates e2 between which is journaled the sheave se. Both legs o'r the channel iron l0 are cut out in the web opposite the sheave 44, one openingl being shown in Fig. 2, to permit the passage or the cable 46 as itis led from the swivel block 38 to the bollards or winch.

lt will be apparent trom the foregoing description that the angle plates 22 constituting the stationary hinge members may be permanently bolted to the deck. ot the vessel and lett there at all times without Jforming objectionable structure. rlhe gallows trame in its entirety may be connected to these hinge members by bringing the transverse angle plates i8 into registration with the stationary plates 22 and inserting the hinge rod 20. Nothing further is necessary beyond supporting` the 'frame imposition. This iseliected, as shown in Fig.A 4, by a strutor stay rod 30 connected at its upper end to the plate 2e and at its lower end to a bar 5G, shown as pivotally mounted upon an angle plate post 52 secured to one side of the deck house ofthe vessel.

be straightened to move the gallows frame into outboard position, as shown in full lines in il, or broken, as shown in dotted lines,

rlhe lower end or if' the stay rod 30 is hooked into'one of a. series V olf pertorations in the bar 50 which, with f the stay rod, constitutesa toggle which may rail of the vessel. When the bar 50 is swung into its upright position and the toggle broken to retract the gallows frame, the tie bar 56 may be detached and removed so as not to obstruct the deck.

rlie arrangement of the stay rod 30 is of secondary importance and may extend from the gallows frame directly to the opposite rail of the vessel or to the declr house, depending upon the location ot the gallows trame. rilh'e plate 24: is provided with perforated ears to which supplementary stays may be attached, it desired. lt will also be apparent that the cable lo may be led from the sheave 44 in either direction and through either leg ot the gallows trame. The general organization and assembly of the traine, therefore, aifords a flexibility or set-up and range ot usefulness vhich it is believed has not been hitherto approached in structures of this kind.

riaving `thus described my invention, what V claim as new and desire to secure by Let- Patent is:

l. li gallows frame comprising a continuous channel iron bent to 'form two legs converging to Va curved vertex and having its iianges outwardly directed, a curved reinforcing strap extending over the vertex in contact with the web ot the channel iron between its flanges, a swivel block suspended` a;

trom the vertex, anda crossgirt secured in place to and between the legs of ther frame.

2. A gallows trame comprising a continuous channel iron bent to form upright legs merging into a curved vertex, a curved strap bolted to the web ot the channel irona cross girt secured between the legs and forming therewith a self-contained rigid structure', and a hinged support for the frame whereby the latter may be swung about substantially the longitudinal axis of the cross girt.

3. A gallows trame for use on a vessel, comprising a rigid channel iron structure of substantially triangular shape, wedgeshaped hinge members disposed beneath thev trame and secured to the base thereof and to the deck of the vessel, and a transverse hinge pin inserted through one end ot said wedgeshaped members and adapted to support the frame when the latter is in substantially up- 1ight position while permitting the wedgeshaped members to support the frame when in an inclined hoisting position. 1

el. A gallows frame comprising a substantially triangular structure having an oilset hinge connection at its base, `and cooperating hinge members each having a supporting :tace oblique to the aXis of the trame disposed beneath the latter and adapted to support it in an inclined hoisting position. Y

5. A gallows frame for use on a vessel comprising an elongated fabricated structure having a transversely extending base, a hinge connection disposed parallel'to the base-and oi'lset with respect thereto, spaced tapering lli? hinge members secured beneath the base, and v gated fabricated structure having a trans-.

versely extending base, a pair vof spaced wedge-shaped plates secured beneath said base in cdgewise relation and perforated at their larger ends, a hinge pin extending between said plates and through said perfo* rations, and similarly shaped wedge plates secured to the deck and carrying the hinge in. f

7. A gallows frame for use on a vessel, comprising an elongated fabricated structure, a hinge connection for Asecuring said structure to the deck of the kvessel and means located beneath the frame for supporting the weight of the structure adjacent to the hinge connection but offset with reference thereto.

8. A gallows frame for use on a vessel, comprising an elongated fabricated structure, a hinge pin for securing said structure to the deck arranged to carry the weight thereof when the latter is in substantially upright position, andv supporting means for carrying the weight of the structure when the latter is in inclined hoisting position and for putt-ing the hinge pin in a state of transverse tension.

9. A gallows frame comprising a substantially triangular` structure fabricated of channel iron and having a curved vertex, a

curved strap extending over the vertex and secured to the web of the channel iron, a U-bolt having its ends straddling said strap,I and a swivel block suspended from said bolt.

10. A. gallows frame for use on a vessel, comprising means for pivotally securing the base of the frame to the deck of the vessel, a truss rod extending from the top of the frame, an arm pivoted to the vessel and connected to the other end of the truss rod, the

arm and rod forming a toggle which may be broken to move the frame into inoperative position and straightened to supportthe frame in an overhanging operative position.

l1. A gallows frame comprising a continuous channel iron bent to form converg-4 ing legs, a curved reinforcingstrap extending over the vertex thereof, and a flat plate shaped to correspond in contour with the flange of the bent channel iron adjacent to the vertex, beingv rigidly secured thereto and having an ear perforated to receive the end of a stay member.

12. A gallows frame comprising a continuous channel iron bent to form two sides of a triangle, a swivel block suspended from the flanges thereof, and a sheave journaled between said cheek pieces and in cooperative relation to said swivel block.

13. A gallows frame for use on a trawling vessel, comprising a continuous channell iron bent to form converging legs, transverse an* gle irons connecting the lower ends of the legs and carrying a centrally disposed sheave, each leg being perforated near its end above the transverse angle irons, and a pulley block suspended from the vertex of the frame and adapted to receive a cable leading through the y perforation in either leg.

le. A gallows frame for use on a vessel comprising a rigid triangular structure having a transverse base member,` and angle irons lsecured to the ydeck yof the vessel and said RALPH EYSYMONDS.

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