US572399A - Net-lifting device - Google Patents

Description

2 Sheets-Sheet 1.

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`J W ATWOOD 'NET LIFTING DBvIcE.

a. nted Deo. 1. 1896.

rlllllriv No. 572,399. Wfl' IH Dn 0 T N E V N Arofmfys.

1n: xmms vrins cu. PHGULLITHQ. wAsHlNroN. DA c.

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J W ATWOOD NET 'LIFTING- DEVIGB. No. 572,399.

Patented Dec. 1, 1896;

ATTORNEYS.

. t /if/ fl* UNITED: STATES PATENT OFFICE.

JOHN WALTER ATwOOD, OE MALDEN, MASSACHUSETTS, ASS'IGNOE To HIM- SELE, AND THE A. BOOTH PACKING COMPANY, OE oHIOAeo, ILLINOIS.

NET-LIFTING DEVICE.

SPECIFICATION forming part of Letters Patent No. 572,399, dated December 1, 1896.

Appnason fuea November 22,1895. sain No. 569,805. oro model.)

To all whom t mar/ concerm Be it known thatI, JOHN WALTER ATwooD, of Malden, in the county of Middlesex and State of Massachusetts, have invented a new and Improved Net-Lifting. Apparatus, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved lifting-machine more es- Io pecially designed for taking up or hauling in gill fish-nets, fish-trawls, or Set lines or ropes in a very simple and effective manner.

The invention consists principally of arev- Oluble drum carrying at its periphery clamps I5 adapted to engage the net, line, or like device and release the same after drawing it a suitable distance. The invention also consists of certain parts and details and combinations of the same, as 2o will be fully described hereinafter and then pointed out in the claims.

Reference is to be had to the accompanying drawings', forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of the improvement as applied and with the vessel in section. Fig. 2 is an enlarged plan view of the improvement with part broken out and show- 3o ing by dotted lines the position of the cam for opening the clamps. Fig. 3 is a sectional side elevation of the same on the line 3 3 of Fig. 2. Fig. 4 is a sectional plan View of part of the drum on the line 4 4 of Fig. 3, and Fig. 3 5 5 is a front elevation of the'same with parts broken out. Fig. 6 is a plan view of a hereinafter-fullydescribed part.

The improved machine is mounted on a suitably-constructed frame A, in which is 4o erably made hollow, and on which is loosely mounted a drum C, carrying at its periphery a series of clamps D, each independent of the other and placed suitable distances apart,

v as plainly indicated in Fig. 2. Each of the clamps D is provided with a block D', made of rubber or like elastic material and held in a bearing or guideway D2, secured to the peripheral surface of the drum O. The top 5o of the block D is attached by a plate D5,

journaled a vertically-disposed shaft B, prefheld on a screw D4, screwing in a lug C', projecting from the drum C.

Directly below thev block Dl is arranged a movable clamping-block D5, fitted to Slide in suitable bearings D, likewise secured to the peripheral surface of the drum C, as plainly illustrated in Figs. 4 and 5, and the lower end ofthis block D5 is pivotally connected by links D7 with the upper end of a springpressed lever D8, the links being connected 6o at the lower edge thereof. The adjacent ends of the block D5 and the lever D8 are beveled, so that when the said lever DS is in a vertical position the block D5 and said lever are in alinement and the block D5 is in an upper- 65 most position to securely engage and clamp the net, line, or like device. vThe lower ends of the levers DS of the clamps D are respectively provided with retractile Springs D10, the springs being connected to their respec- 7o tive levers and to the table I, to be hereinafter described. The springs tend to draw the levers Ds outward, so as to swing the blocks D5 upward and cause them to engage with the blocks D. l/Vhen, however, the drum C revolves to bring the levers D5 into contact with the cam E, the cam Inoves the levers inward, so as to permit the blocks D5 to drop and open the clamps, such Operation being against the tendency of the springs D10. 8o

A yielding connection is made between the drum C and the hollow shaft B, and for this purpose springs Il are provided, secured at their inner ends to collars H', fastened on the hollow shaft B, while the outer ends of the said springs are fastened on pins H2, secured to the top and bottom of the drum C. Now it will be Seen that when the shaft B is rotated a like Inotion is given to the drum C, and the clamps D are opened and closed durf 9o ing one revolution of the drum, so that any article passing in the Space between the two blocks D' and D5 is clamped in between the blocks upon the block D5 closing by the ac# tion of the cam or guideway E. The article thus clamped is carried around on the drum until iinally the clamp opens by the cam or guideway E acting on the lever D8 to swing the latter in an inclined position. v

The yielding connection between the drum Ioo C and the hollow shaftB is made for the purpose of compensating fer any slip or uneven pull caused by the article clamped between the blocks D' and D5 of the clamps, so that the driving mechanism for ilnpartin g a rotary motion to the shaft B is not disturbed. The shaft B is made hollow to permit of introducing steam through a pipe B to heat the drum C, so that the clamps work properly in cold weather, especially if ice or snow tend to block the clamps. The steam passing into the pipe B can readily pass into the drum C through perforations C2, formed in that part of the pipe extending within the dru'in.

A revolving brush F serves to remove the line, net, or like arti-cle from the clamps as soon as they open, and this brush Fis secured in the upper end of a shaft F', journaled in the frame A and connected by a pulley F2 and belt F3 with the hollow shaft B. Thus when the latter is rotated a rotary motion is given to the dru-m C and the said brush F for the purpose previously stated. A rotary motion is given to the shaft B by a suitable motor, preferably Ian engine G, located on the frame `A and carrying on vits main shaft G' a beveled gear-wheel VVG2 yin mesh with a beveled gear-wheel G3, secured on a shaft G4, extending vertically and journaled in suitable bearings in the main frame A.

On the shaft G4 is fastened a pinion G5 in mesh with a ygear-wheel G6, secured on the shaft B, so that when the engine is set in motion a rotary motion is transmitted `to the said shaft B by the gear-wheel G6, pinion G5, shaft G4, and beveled gear-wheels G3 and G2, of which thelatter is secured on the main shaft yG of the saidengine.

lVhen the machine is used on the deck of a vessel, as illustrated in Figs. l and 3, then the shaft B is disposed vertically and the drum C is surrounded by and supports a circular table I, 'which revolves with the drum and has its top surface slanting upwardlyand outwardly, as plainly indicated in Fig. The net, line, vor other device to be clamped passes up the -table I into the space between the blocks D and VD5 of an open clamp D, to -be there engaged upon the clamp closing, as previously explained. From this table I extends a stationary table J at one side of the vessel to a guiding device K, supported Von the rail of the vessel L, as plainly indicated in Fig. l. This guiding device K is provided with a horizontally-disposed roller K and two vertically-disposed rollers K2 at the ends `of theroller K. The top surface of the latter leads onto the .table J, and the net., line, or like device passing from the water upward is engaged between the rollers -K2 and passes `over the roller E to the table -J and from .the latter to the circular table I, to be engaged by the clamps D, as previously explained. Now as the drum C rotates, the net, line, or like device is dragged along to be finally released on the opposite side from that on which it was clamped. As the clampsD follow one another upon closing, a continuous grip is had on the line, net, -or like device, so that the said net or line is readily drawn up from the water and passed into the vessel L.

The device may b'e used directly over the water, and in this case the tables I and J and the guiding device K are entirely dispensed with and the frame A is mounted on a turntable secured to the side of the vessel L, with the shaft B extending horizontally. The net, line, or like device is then passed between the open clutches to be clamped therein and carried upward by the revolving drum, to be finally released when the respective closed clamp reaches the inside of the vessel.

I do not limit myself to the special means shown for closing and opening the clamps, as other devices, such as springs, may be used. Furthermore, the yielding connection between the shaft B and the drum C'may be entirely dispensed with and the said drum directly fastened to the shaft B by suitable means for instance, by pins H3 ypassing through the collars H and engaging the top and bottom of the drum C, as shown in Fig. 3.

Having thus .fully described my invention, I claim as new and desire to secure by Letters Patentl. An apparatus of the class described, provided with a revoluble drum, clamps arranged on the periphery thereof, each clamp comprising an velastic block, a .guid'eway for the same, an adjustable plate engaging `the top of the block, a movable block directly oppo site the said elastic block, alever pivotedon same, van adjustable plate engaging the top of the block, a movable blockdireetly opposite the said lelastic block, a .lever pivoted on the drum and adaptedto laciuate the said movable block, the adjacent ends of 'the'said movable block and lever being'beveled, a cam capable of moving the lever, and a spring pressing the lever, substantially .as shown and described.

3. The combination with a frame, of a vertical shaft revolublyinounted therein, a drum. fixed to the shaft, a series of stationary blocks ycarried by the drum, a movable block for each stationary block vand carried by the drumand capable of sliding toward and from .the respective stationary blocks, levers fulerumed on the drum, links respectively connecting the levers .and 4the movable blocks, a table outrunnin g from the drum and moving therewith, retractile springs :respectively connected to the levers and .to the table, and a cam fixed to the frame and capable of being IOO IIO

tivelyslicling toward and from the stationar7 1o blocks, levers fulcrumed to the drum, links respectively connecting the levers and movable block, springs pressing the levers, and a cam for moving the levers against the tensions of the springs, substantially as clescribed.

J OI-IN VALTER ATWOOD.

lVitnesses:

- E. W. MILLER,

JOHN W. GILLIc-AN.

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