1848.] 



THE CIVIL ENGINEER AND ARCHITECTS JOURNAL, 



225 



THE JACQUARD PUNCHING MACHINE. 



( With two Engravings, Plates X. and XI.'' ) 



Patent Maehine fur Perforating Metal Plates, such as are used 

 far Steam- Boilers, tSc / and employed for Punching the Plates of the 

 Tubular Bridge at Conway; made, at the Globe Works, Manchester, 

 by Messrs. Roberts, Fothergill, and Co. 



Mr. Roberts, the patentee, has most liberally, at our particular 

 request, furnished us with all the detailed drawings of this very- 

 important machine ; for which we are sure all our mechanical 

 readers will join with us in awarding thanks for his liberality. 



Fig. 1 (Plate X.) represents a sectional elevation of the machine ; 

 fig. 2, an elevation of the back of the machine ; fig. 3, a plan-view of 

 the apparatus for putting the punches out of action without 

 stopping the fly-wheel; and fig. 4', a plan- view of a few of tlie 

 Jacquard plates. Fig. 5 (Plate XI.) represents a front elevation ; 

 fig. 6, a side elevation; and fig. 7, a horizontal section, taken through 

 the dotted line A', A', in figs. 1 and 2. Fig. 8 is a detached view 

 of the traverse-apparatus ; and fig. 9, a detached view of the 

 Injlding-down or stripping apparatus. A, A, the standards. B, 

 the bed, through which there is an opening for the punchings, or 

 metal punched out of the plate, to fall through ; this bed is in- 

 serted into the standards C, a stretcher-bar, to connect the top 

 of tlie standards. D, fulcrum of the levers 7, 7, which withdraw 

 tlie punches, and of the lever «j, which traverses the plate. E, a 

 fukn-um-shaft, to which the levers 7, _/, and !c, h, are keyed. F, the 

 main or eccentric shaft, working in bushes in the standards. G, 

 a spui-wheel, keyed on the eccentric-shaft. H, a pinion, working 

 into the wheel G. I, the fly-wheel shaft, on which are the fast 

 and loose pulleys K, and L, the pinion II, and the fly-wlieel J. 

 M, M, connecting-rods, fitted to the eccentric necks of the shaft 

 F. N, N, caps of the connecting-rods M, M. O, O, guide-plates 

 for the punch-rams P, P. Q, the cam-shaft. R, a spur-wheel, 

 loose on the cam-shaft, and having on one side two projections, 

 between which there is an opening. R*, a locking-disc or plate, 

 keyed on tlie shaft Q, having upon it a spring catch 38, wliich 

 takes into the opening between the projections on the wheel R. 

 R, and R"", are seen detached in fig. 5, and the dotted lines on R"' 

 represent a weight to counterbalance the levers k. S, a toothed- 

 wheel, keyed on the main-shaft F. T, the punch-ram-depressor, 

 secured to the connecting-rods M, M, by knuckle-joints at the 

 lower end of the connecting-rods. U, a slide-bar, on which the 

 frame traverses, which carries the plate to be punched. V, V, two 

 short slide-bars, to carry one side of the traverse-frame. W, a 

 block of iron, fastened with short wedges to the bed B, to carry 

 the die-plate X, into which the dies d, are inserted, and prevented 

 from rising by a collar at the lower end of each, as seen in fig. 11. 

 Y, a square shaft, carrying the holding-down levers, or stripping- 

 fingers, n, 0. Z, Z, levers on each end of the shaft Y. a, a, the 

 punches let into the punch-holders b, b, bolted to the rams P, as 

 seen in the detached view, fig. 5. c, c, pieces bolted to the bed 

 B, to carry the adjusting slide-bars V, V. d, dies inserted into 

 the holder X. e, e, (fig. 1), are the selecting slide-bars, whidi, 

 when allo\ved to pass tlirough the card-plate, enter the card-roller/; 

 without being pushed backward by them ; the card-roller has in 

 this case six sides, and the belt of Jacquard plates, after passing 

 over it in the usual manner, passes over a round roller suspended 

 in a swing-frame, at such an angle as shall keep the belt 

 moderately tight, whilst the roller/ ad\ances towards and recedes 

 from the selectors e. g, g, brackets projecting from the depressor 

 T, and carried up and down with it. h, h, sliding-blocks, in which 

 the journals of the card-roller turn. To an upright cast on each of 

 these blocks, is fitted a rod of round iron, tlius, *, with a fiat foot, 

 long enough to extend over two of the six pins in the ends of the 

 card-roller, against which the flat foot of the rods is made to press, 

 by spiral-springs coiled around them in the usual manner employed 

 in the Jacquard-loom, which is generally known, and need not be 

 further described, i, i, (fig. 1), are two sets of guide-blocks, for 

 the selectors e, one on each side of the depressor, adjustable 

 laterally by set-screws on flat bars, extending across the machine ; 

 the use of these blocks is to carry the selecting-bars e, which are 

 round at the end that enters the cards, and flat at the other end, 

 to keep them in their proper positions ; the centre portion of each 

 selecting-bar is a solid piece of iron, projecting as much below 

 the round stem as will, when the selecting-bar is driven backwards 

 by a card-plate, permit the depressor T to complete its downward 

 stroke without the selecting-bar touching the ram P, under it. j,j, 



* in coitsfqueiice of the elaborate character of the two enKravinga, we are obliged to 

 postpone giving one of the plates until next mouth; hut when the volume is bound up, 

 Ibe two plates will appear together. 



No. 131— Vol. XI.— August, 1848. 



are levers keyed on the shaft E, and connected at their lower end 

 by links to the slide-blocks /;, /(. /,-, k, are levers also keyed on the 

 shaft E, antl having each a friction-roller at its lower extremity. 

 On the shaft Q, are two cams, one of which works a lever k, on 

 one side of the shaft, and the other cam works the other lever k, 

 on the opposite side. One of the cams, through the medium of 

 the levers y,,/, and the links before referred to, causes the roller/ 

 to approach the selecting-bars e, and the other cam causes the 

 roller to recede from them, until by a catch employed in the ordi- 

 nary way in the Jacquard looms, the roller / is made to turn 

 through one-sixth of a revolution, and is then retained in that 

 position by the pressure of the spiral spring and flat foot above 

 referred to /, /, are brackets attached to the depressor T, at the 

 back of the machine, seen best in fig. 1. 7n, a bar resting on the 

 brackets /, /, and connected by rods with the sliding-blocks h, h, 

 which, on receding, cause the bar m to bring all the selecting-bars 

 e into the position for depressing the rams, as seen in fig. 11. n, m, 

 are levers having their fulcra on studs screwed into the standards; 

 one end of these levers is connected by a rod ;), with the levers 

 Z, Z ; the other end is furnished with a roller which is acted upon 

 by a cam u, on the shaft Q, (see fig 8). 0, 0, are the holding-down 

 levers, adjustable laterally on the shaft Y, so as to admit of one of 

 them being placed on each side of every punch, p, p, are rods 

 connecting tlie levers n, and Z. By adjusting the length of these 

 rods, the levers 0, 0, are made to press upon plates of different 

 thicknesses, so as to hold the plates down while the punches are 

 being withdrawn, q. q, le\ers turning on the fulcrum-bar D, for 

 withdrawing the punches by means of the cams r, r, that actuate 

 levers q, q. s, a broad but rather thin bar, extending through the 

 series of punch-rams P, shown by dotted lines in "figs. 7, and 2. 

 The punch-rams P, are made with slots, through which the bar * 

 passes, and tliese slots must be about two inches longer than the 

 width of the bar s, in order to allow the punch-rams to be forced 

 down when the l)ar is at the bottom of its stroke. t, t, are links 

 connecting the bar .« with the levers 7, 7. 11, 11, are cams which 

 depress the holding-down levers 0, 0, through the medium of the 

 levers n, n, rods ]i, p, and levers Z, Z, and hold down the plate 

 while the punches are being withdrawn, v, a cam for the tra- 

 versing-rack 5. v; a lever turning on the fulcrum-bar D, and 

 worked by the cam i\ ,r, the cam for lifting the rack 5. y, a 

 lever turning on a stud in the standard, and worked by the cam x, 

 for lifting the ti"iversing-raek 5. z, a rod connecting the lever y 

 with the lever 8, seen best in fig. 10. 1, is a lever on the traverse- 

 shaft 2. 3, another lever on the shaft 2. 4, a link connecting the 

 lever 3 with the rack 5. 6, a rod connecting the lever w with the 

 lever 1, for tra\-ersing the rack 5. 7, a shaft for carrying the 

 levers 8, 9, and 10. 11, a link connecting the levers 10 and 12. 

 13, a shaft carrying the levers 12 and 14. 15, and 16, are links 

 connecting the rack 5 with the levers 9 and 14. 17, the upper or 

 retaining rack. 18, a stud carrying the elbow-lever 19, which is 

 provided with a handle. 20, another stud carrying the elbow- 

 lever 21, which is connected by a link 22 with the lever 19. The 

 rack 17 is carried on studs in the horizontal arm of the levers 19 

 and 21. 23, division-studs in the bar 24 of the traversing-frame. 



The plate to be punched is put into a traversing-frame formed 

 of two side-bars, 24 and 25, and two stretcher-bars secured by 

 cottars to the side-bars, which are rabbeted to support the plate, 

 and, when required, furnished with clamps to hold the plate down. 

 24 represents one of the sides of the traversing-frame, in which 

 there is a groove to fit on the slide-bar U ; into the outer side of 

 the bar 24, is screwed a series of studs 23, represented in the 

 engravings as being 12 inches from centre to centre apart from 

 each other. The side 25 of the frame slides on the bars V, V. 

 When the plates to be punched are very long, rollers may be 

 used to carry the projecting ends of the traversing-frame. In 

 fig. 9 is shown part of a frame, with a plate partly perforated. 

 The racks 5, and 17, (fig. 10,) are drawn with three teeth in 

 the length of a foot, which will divide plates to a four-inch 

 pitch ; but it will be obvious, that for a different pitch the racks 

 must be changed ; and it may, in some (cases such as when the 

 pitch required is not an aliquot part of a foot) be necessary to alteir 

 the distance between the studs 23. Fig. 10 represents the traverse- 

 apparatus, in the position it will be in when the retaining-rack is 

 down, and the punches in the act of passing through the plate, 

 and the traversing-rack having completed its return-stroke. 



When the punches are being raised, the traversing-rack will rise 

 also ; and by the side-piece 26 (which is attached to it) acting 

 against the roller 27, on a stud in the rack 17, will raise it also, 

 and set the frame at liberty to be advanced by the cam x, through 

 the mechanical means already described. In fig. 1, this traverse- 

 apparatus is shown in the position it assumes when the plate is ad- 



30 



