US326506A - Apparatus for molding the frames of ships and transferring curves - Google Patents

Description

(No Model.)

T. JOHNSON 8u' J. MGDONNELL.

APPARATUS POR MOLDING-THE FRAMES OP SHIPS AND TRANSPERRING GURVES. No. 326,506. 1 Patented Sept. 15,1885.

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APPARATUS FOR MOLDING THE FRAMES 0F SHIPS AND TRANSFERRING CURVES.

SPECIFICATION ibi-ming partei' Letters Patent No. 326,506, dated September 15,1885.

Application filed December 16, 1884. (No model.)

To all whom, t may concern.'

Be it known that we, THoMAs JOHNSON and JOHN MODONNELL, citizens of the United States, and residents of Wilmington, in the county of New Castle and State of Delaware, have invented certain new and useful Improvements in Apparatus for Molding the Frames of Ships and Transferring Curves, of which the following is a description.

The invention relates to the class of apparatus which is used in a molding-loft for transferring 1ines,which have lbeen laid down upon paratus is described which consists, essential` ly, of a series of keepers which are secured to the molding-floor, a flexible batten, and a series of iiexible adj Listing-bars, which at one end are pivoted to the batten and at the opposite end are adjustably secured to the keepers, the purpose being to adjust the batten toward or from the keepers by suitable manipulation of the adjusting-bars.,

Under most conditions the apparatus de-v scribed in the patent referred to may be operated with satisfactory results; but we have found that under some circumstances a saving of time and labor may be effected by making both, instead of one only, of the connections of the adjusting bar or rod adjustable. In other words, we dispense 'with the pivotal connection of the bar with the batten, and instead attach the bar to the batten in such a vmarking implement.

tain them in their position upon the iioor against the strain of the batten'.

In the drawings, Figure l is a plan view of the apparatus, the batten being represented as adjusted to one of the curved lines upon the molding-Hoor, and the curved dotted lines indicating the adjustment ofthe batten at other stages ofthe work. This figure represents also edge views of portions of the keepers and their attachments. Fig. 2 is an end view, drawn to an enlarged scale, the keeperbeing represented in vertical transverse section. Fig. 3 represents a plan view and also an edge view of a twopart adj usting-bar. Fig. 4 is an enlarged perspective view representing the adj usting-bar as in slidable relation with the batten, Figs. 4 and 4l being modifications of the same. Fig. 5 is'au edge or end view similar to that seen in Fig. 2, but showing the batten as of ribbon form, as when composed of steel, and also representing the overhanging end of the adjusting-bar as beveled or cut away to accommodate the movement of the pencil orl other Fig. 6 is a plan view of the parts represented in Fig. 5, the thumbscrew being removed. Fig. 7 is an enlarged perspective view, showing a broken section of one of the keepers as when composed of horizontal sections placed one upon the other and Fig. 8 is a detail perspective similar to that seen in Fig. 7, but representing the body of the keeper as composed of a single piece. Fig. 9 is a detail in which the batten is represented as rectangular in transverse section.

In all the figures A is the batten; B, the exible adj usting-bars; (l, the keepers; D, the thumb-screw; C, the slots or passages in the keepers; F, the screws for attaching the keepers to the floor; l, the hooked engaging ends of the adjusting-bars, and a the recess in the batten for receiving the depending end of the hook b.

In Fig. l, B are adj usting-bars, which, by a screw, f, are pivoted to one end of the batten to secure it firmly in position. B is a nut, which may be provided with a thumb-piece for securing the sections of the two-part adj usting-bar B at any desired angle to each other. This latter construction (more fully represented in Fig) is found serviceable IOO when it is necessary to adjust the batten to very short or quick77 curves, the play of the one-part adjusting-bar Within its slot being sometimes insuicient to secure the required deflection of the hatten.

The keepers may be of' any suitable or convenient length, and may be separately secured to the floor, as in the upper portion of Fig. l; or they may be made in sections to be connected together and to the floor, as represented in the lower portion of the same ligure. The passages in therkeepers will preferably be enlarged fromthe center toward the right, and toward the left on either face of the same, as seen in Figs. l, 7, and 8, to permit the necessary lateral movement of the adjusting-bars within the passages.

The keepers may be composed either of wood or of metal. When of the former ma- 'terial, several horizontal sections may be suitably connected together, as in Fig. 7, and when metal is used the keepers, or each section thereof, may be of a single piece, the slots being cast or otherwise formed therein, as in Fig. 8. lt is apparent that if metal bewemployed of' `s iitabie dimensions attachment of the keeper moving the adjusting'bars toward or from thev keepers, the thumb-screws beingemployed, when the adjustment is effected, to secure the bars in place. A board being then slid benath the hatten, the desired line is ind1cated upon the same by means of a pencil or other marking instrument, which is moved. along the two at their point of contact. The board being then removed is converted into a mold bythe removal cf that portion of the same which is exterior to the line thus produced.

lt will be observed that by reason of the provision of the slidable connection of the bar with the hatten changes in the adjustment of the bar with the hatten may Within shortdis tances be effected without change in the adjustment of the bar Within the keepers, the hook engaging with the hatten in such a manner as to prevent it from slipping within the grasp of the hook, and yet so loosely as to be freely slidable along the hatten. The hatten being first approximately adjusted. by means of the connection of the adjusting-bars with the keepers, slight variations from the line may be corrected and the adjustment completed withentire accuracyby moving the hooked end of the bars, one or more, as may be necessary, along the hatten.

In some instances it will be necessary, as already indicated, to bring into use the twopart adj listing-bars, (represented in Figs. 1 and 3;) but under ordinary circumstances the onepart bars will be sui`cient for `producing the necessary curvature of the hatten.

Having described our invention,we claim- 1. The combination, with a moldingffloor, of a series of keepers which are secured to the floor, a 'flexible hatten, and a series of flexible bars which at one end are adjustably con nected to the keepers. and at the opposite end are connected to the hatten, and are slidable along the same.

2. The combination, with a molding-iloor, of a series of keepers which are secured to the floor, a flexible hatten, and flexible two-part bars which are adj ustably connected to the keepers, and which are-connected to the batten, and are slidable along the same.

' THOMAS JOHNSON.

y JOHN MCDON N ELL.

Witnesses:

HENRY R. PENINGTON, HARRY EMMoNs.

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