US465301A - wallace - Google Patents

Description

3 Sheets-Sheet 1.

D L E I I m PM I OH. .A RM &m M N m mm S W W W d 0 M 0 W No. 465,301. Patented Dec. 15,1891.

flilness cs.

(No Model.) 3'S11eets-Sheet 2.

W. W. WALLACE & R. G. PENFIELD.

STEAM 'BRIGK MACHINE.

No. 465,301. I Patented Dec. 15, 1891.

3 Sheets-Sheet 3.

WLW. WALLACE 8B R. G. PENFIBLD.

STEAM BRIGK MACHINE.

No. 465,301. Patented 1390.15, 1891.

'(No Model.)

' NITE i STATES PATENT oF' C VILLIAM W. VALLAOE AND RAYMOND C. PENFIELD, OF VILLOUGHBY, OHIO, ASSIGNORS TO J. F'PENFIELD & SON, OF SAME PLACE.

STEAM BRICK-MACHINE.

SPECIFICATION forming part of Letters Patent No. 465,301, dated. December, 15, 1891.

v I Applicationfiled $eptember 3, 1891. serial No. 404,651. (No model.)

hereby declare the following to be a full,

clear, and exact description ofthe invention,

' such as will enable others skilled in the art to which it pertains to make and use the same. Our invention relates to improvements in horizontal and preferably double-acting steam brick-machines; and it consistsin certain fea tures of construction and in combination of parts hereinafter described, and pointed out in the claims. e may here remark that this class of brick machines is usuallyof large size and capacity. Otherwise they would have no particular advantage over ordinary brick-machines. For instance, the machines that we manufacture, such as hereinafter described, are intended to manufacture about a hundred thousand bricks per day, from which will be inferred the fact that the movable parts are necessarily large, which, together with the large amount of sharp-cutting material passing through the machine, causes excessive wear and tear, especially in the compression-box, and unless the construction be such that the wearing parts can be easily and cheaply renewed such machine would be considered impracticable.

In the accompanying drawings, Figures 1 and '2 are respectively side elevation and plan, each partly in section. Fig. 3 is an end elevation. Fig. lis a perspective view of one of the compression-boxes detached, and Figs. 5 and 6 are perspective views of lining-plates for the same. Fig. 7 is a side elevation in detail of a plunger and cut-off plate for a compression-box.

A represents a horizontal steam-cylinder, supposed to be of large size, and B B are the compression-boxes, made square or rectangular in crosssection, and these compressionboxes are of course set in line with cylinder A. The latter is provided with the usual heads A, piston, and piston-rod A the vpiston being attached to the longitudinal center of the rod and the rod extending out through the stuffing-boxes a a of the cylinder heads.

The vplungers B B of the compressionboxes are mounted on the respective ends of the piston-rod A Dies of any desired form, and usually a series of them, are secured at the outer ends of the compression-boxes, as at O. Heretofore with this class of machines the compression-boxes were usually cylindri cal and bored; but anymaterial that is soft enough to bore will wear out so fast that the frequent renewal of such cylindrical compression-box is a serious objection. To overcome this difficulty we construct the compression-boxes square or rectangular in crosssection, and we line these boxes with flat-faced chilled-iron plates B B (Shown in detail in fit in between the top and bottom plates B thus supporting the latter, and the plates are held endwise by means of ears I) of the plate, these cars being bolted to the ends of the compression-box. These plates should be cast of hard metal and the innerfaces thereof are preferably chilled, and if these chilled faces are fairly smooth castings no dressing or fitting is required, and they will eventually and soon wear smooth. To provide for the wear on the plungers 13, these are provided with packing-plates b, that fit in groovesb of the plungers. The packing-plates b are supposed to be of cast-iron, and are easily and cheaply renewed. D are upright puggingmills of ordinary construction, and are mounted above'the respective boxes 13, the latter having large induction-openings 13, directly under the pugging-mill, to receive the discharge from the pugging-mill. Each plunger B is provided with a cut-off plate E, extending from thence inward or toward the steamcylinder. These plates E cover openings B when the respective pistons are thrust outward past these openings, pending which the mud discharged from the pugging-mil'l above piles upon the opposing 'plate E, and when the plate is withdrawn by the reverse movement of the plunger the charge of mud is supposed to fall by gravity into the compressionbox. When, however, the material is of a stiff and sticky character, it will sometimes become so packed into the chamber above plate E that it will not fall by gravity alone, and to guard against this we employ a'pairof Figs. 5 and 6.) As shown, the side plates B n feed-rollers F F, located directly over the in duction of a compression-box. These feedrollers revolve intermittently, stopping when aperture B is closed and starting when this aperture is open. The driving-pulley ffor each pair of rolls is of the well-known friction-clutch variety, and the lever that opens and closes the clutch depends and operates in cam-slot j of the opposing plate J, the latter being attached to the adjacent cross-head H. The steam-valve (not shown) may be of any suitable variety, and this is preferably actuated by hand -lever K, and the induction steam-port could be made so small that only a slow movement of the piston could be had with a full head of steam and with the machine running empty, from which it will be inferred that no damage is likely to accrue by reason of the steam-piston striking the cylinder-head. The valve of course could be operated automatically, if sodesired; but in this connection We will add that it is very difficnlt, if not impracticable, to have always a uniform discharge of material from the pugging-mills, and. if the operator actuates the valve by hand he can operate the machine faster or sloweryaccording as the puggingmill delivers material faster or slower, and hence We consider it better practice to operate the valve by hand. The piston-rod between the steam-cylinder and compressionboxes is provided with cross-heads H, that engage and travel on ways h, whereby the weight of the steam-piston and of the plungers is in the main sustained to prevent excessive wear on the bottom of the cylinder and compression-boxes.

What we claim is- 3. In a horizontal steam brick-machine,the

combination, with rectangular compressionboxes, substantially as indicated, of liningplates for the same, such plates having ears for fastening to the ends of the compression boxes, substantially as set forth.

4. A horizontal steam brick-machine comprising steam-cylinder and compressionboxes, substantially as indicated, puggingmill and feed-rollers located between theeduction of a pugging-mill andthe induction of a compression-box, and automatic shifting mechanism operated from the brick'machine for stopping and starting the feed-rollers, substantial] y as set forth.

In testimony whereof we sign this specification, in the presence of two Witnesses, this 27th day of July, 1891.

WILLIAM WV. WVALLAOE. RAYMOND C. PEN FIELD.

Witnesses:

O. L. GRAY, L. W. PENFIELD.

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