US74068A - Improvement in machine for forming sheet-metal moldings - Google Patents

Description

UNITED STATES "PATENT OFFICS,

.VALENTINE FISCHER, or ANEW `YORK.; N. Y.

' iMPaovrMENT IN- MAQHINE Fon roRMlNG SHEET-METAL MoLmNGs.

Specification forming part of Letters Patent No. 744368, dated Fehrurtry 4, 1868.

To allwhomA lMuay concern: y

Beit known that. I, VALENTINE Frscnn, i'

of thel city, county, and State of New York, have invented a new and Improved Machine for Forming Sheet-Metal Moldings j 'and I do hereby declare that the following is afulhclear, and exact description thereof, 'which will enable those skilled in the art to make-aud use: 'the same,l reference being had to the accompanying drawings,formingpart of this specifica-l tion, in whichp V Y Figure 1 represents a side elevationfotmy 'improved machine for forming moldings. Fi g. '2 is a vertical transverse section of the same,

`pressing moldings for cornices, Src., from galvanized or other sheet metal; and consists in so arranging the machine that but two kinds of dies for all kinds of smooth moldings that may have to be formed are neededviz.,round ed and square dies. is required for making all sorts of angles, while of the rounded dies as many sets mustbe provided as there are diiferent-sized curves to be represented in4 the moldings.-

The dies are easily removed and replaced. The male die is arranged stationary, while the female die is secured to a slide or other reciprocating device. The male or stationary die is underneath the female or movable die, for the purpose of preventing the latter from he ing clogged or made imperfect by dirt or other foreign matter. The standard of the male die is made concave on 'one side to allow the forming of three sides of a square by the apparatus.

The invention also consists in the construction and arrangement of the device for moving the upper die. This ,is done bymeans of a series of toggle-levers, which are secured to the ldie or its holder and to the main frame of the machine, their points being in a horizontal rod, which, when moved in one direction,

Of the latter but one set' ened upon) l i same, as it need never be removed; When spreads l the toggles, and therebyrdepresses the punch,

while it will, when moved in thev opposite direction, contract the ends of. the toggles and, raisetlie punch. One end of this rod ishin ged to a screw, which passes througha pinion in which anthread fittin g it is arranged. 'B y`turn ing this pinion, either directly or by means of transmitting-wheels," the ,screw will be drawn` in or out, according to thedirection'in which the pinion is turned, and as thefrod follows the 'motions ofthe screw the die is either raised or lowered.

vA represents a frame, made of 'wood or other' suitable material. ot' sutiicientstrength tosustain the weightof the dies andof the machinery by which the same'are operated, and' also the strain and shock occasioned by the ,motion of the machinery. lThis frame consists more particularly of two uprights, A A, which are far enough apart to allow the necessary length of sheet metal to be placed'upon the dies be.

v'tween them, and of cross --bars Bjaud G,j,th'e

former ior'supporting thelower die, theflatter for connecting the upper parts of the posts and for, suspending the upperldie.

Dis a standard for the lower stationary die. It is, by means of screws .or otherwise, firmly C secured upon the bar B, and Vis made 'in the y form of the letter C-that is, concave'on4 one sida-as shown in Fig. .2.

'The lower die, E, which is a strip as long as the distance between Vthe-uprights A, is fitted upon theupperedge of the standard D, s o as to rmly `remain, thereon. conical incross-sec'tion, forming a right angle at the apex, and may be formed on (not fastthe standard D as part of the rounded dies'F are used they are laid upon this die E, asin Fig. 3, they being recessed at .Y their under side for the purpose 'ofiitting the die E,

The upper die,,G, which is of the sameV4 -length as the lower die, and which is provided with a concave under side that corresponds to the shape of the lower die, as in Figs. 2 and 3, is provided at its upper surface withV two or more lprojecting pins, a, a, which are `perforated, and which serve as a means for fastening the dieto a pendent bar, H, of nearly the same length as the die. Horizontal pins b b, fitted through holes in the barH and through those vThis die -i's is pivoted. Four (more orless) such bars J may thus be .arran ged, their upper ends-being, y by means of pins d d, pivoted to a horizontal bar, K. By means of pins ee are similar bars Lpivoted to the bar K, said pins e, being al-A ways Varranged vertically above the'pins d.

vThe.upper ends of. the bars L are pivoted-in lugs f f, that are secured to the underside-of` the bar C vertically above the lugs c on H.

'These bars J andy L,.or rather each'pair 'of' them, form a'toggle-lever, as shown in Fig, 1.

.Between theiends ofthe levers J and L arel interposed 'on thebar K blocksMM, with liol- 'ylowed upper and.Y lower edges, which are to 'iake; the strainv from thefpins d and e. y n

One end of the bar Kvis connected, by a link, `g,'\vith a horizontal screw, N, which forms theA axle of a pinion, O, in which'a corresponding screw-thread isarranged; Thus, by turning y the pinion O, which is done yby 4turninga gearwheel, Peither by machinery or byfhand,'tbe screw is moved either in or out,.aiccording to the direction in which the pinion is turned, .and thus the bar K is moved in the samedireetion, and the barHis movedvrlown or up..` The upf' 'per die is thereby pressed-v upon thelower die" 'and raised 'from the saine, as may, be.,desire'rl. l

by this machine, as is indicated by red lines in Figs.` 2 and 3, the standard D being `pro.

.vided with aconcave side to facilitatethe forming of such vdifficult moldings, 'as is seen in Fi g.' 2. The dies can be made of steel or other suitable materialand of suitable thickness.

I claim as 'new a'ndvdesire to secure by Letters Patent-'- y l. The machine having the rounded and `square dies arranged as describedpwhereby all kinds of smooth moldings, can be formed, as Aherein shown and set forth.

2.- The standard D, when provided with one concave side, as shown. l

3.' So arranging the ydies E and-F that the latterl can be placed upon the former without vanyother fastening, as described.

4. Arranging thev female die Gabove the `ng'ialefdie E or F, for 'th 'purpose ,oF-keeping thefemal'e die clear, as slet forth. f

5. The device for 'operating the'movable'die,

`said device consisting" ofthe toggle-levers J L, Vin combination with the pendentv bar H and `central bar. K, sothat by moving the latter horizontally the diefwill be moved up and down, as set forth. i

ofopcrating the bar K by-means of the vscrew N and the nut-pinion 0, all lmade as set forth. i 7 iAma'chine for forming-slieet-metal moldl ingswhen the same are made' andl'operating'l herein shown and described.l

substantially as` VALENTINE FISCHER. y Witnesses :'v

4WM.lE.1Vl`.c\T^n/MRA,

A ylhe most .difcult moldings can bei'ormed ALEX. F. ROBERTS.

' 6.' The manner. herein shown and' described f

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