US76888A - Improved beiok-maohine - Google Patents

Description

Y @einen faire atrnt'ffte. i

`E. P. H. cAPRoN, or SPHINGFIELnoHIo, AssicNoHro HIMSELF, GEORGE H. GERHISH, AND D. B. RICH.

Letters .Patent INo. 76,888, dated April 21, 1868.

IMPROVED BRIGlfMAGHINl-l.

VT0 ALL WHOM IT MAY CONGERN Be it known that I, .E. P. H. OAPHON, of Springfield, in the county of Clark, and State of Ohio, haveinvonted new and useful Improvements in Brick-Machines; and-:I do hereby declare the following to be afull and correct description of the same, suicient to enable others skilled in the art to whichmy improvements appertain' ypart of this specification, and iu whichto fully understand and construct the same, reference being had to the accompanying drawings, which make Figure 1 is a vertical section of my improved brickmachine in line :c z, g. 2 Figure 2 is a top view of the same. Figure Sis avpartial and secti'onal side elevation of the same. Figure 4 is a sectional side view, and

Figure 5 a sectional end view of vfny improved follower. Like letters indicate like parts in the` several figures. .l i My improvements belong to that class of brick-machines in which Ya revolving table contains the moulds, which, as they pass under the cylinder, are lled, and from which the bricks are pushed out by followers, when the moulds have passed under the cylinder; and myimprovements consist'in providing the surface of the revolving table, between the moulds, withsteel plates, for purposes hereinafter described.

` Also, in the peculiar construction ofthe screw-blades in the cylinder, which force the clay into the moulds, andi the manner of attachment tothe main shaft. 1

Further, in novel means of securing and operating the striker-plate, and of giving a pressurefrom below to the brick when under therstriker-plate, so as to insure a uniform density of the brick; and i I Lastly, in the construction of the follower, the means of supporting it,` and adjusting its upper plate, and attaching to the latter the covering of cloth commonly used. l i In the drawings, A may represent the bottom pieces of the frame, connected by crossibeams, B, in one of which the main shaft, C', has its lower bearings. This shaft passes throughthe stationary circular plate D, and

supports the revolving table E, the pivot of which it forms, and which is provided with moulds a. The shaft C passes through its upper bearing in a beam, F, supported from the cross-beam, which connects the upright beams G, and is on its top provided with a gear-wheel, H, which meshes with another smaller gear-wheeLI, on the shaft J, which has its upper bearing on the upper 'cross-beam, its low'er one being formed by a shoulder on the shaft J, resting on a cross-piece, K, about the centre of the cylinder L,just above the screw-blades M, the shaft passing through the piece K into the screw-blades. These latter are cast solid1 with an opening in the centre large and deep enough only, however, to allow the lower end of the shaftJ to pass into the same suilciently to allow their being securely attached to the shaft `by means of a set-screw, 6. -As now constructed, these Screw-blades have the opening pass entirely through -their centre, the shaft passing entirely through the same, and causing the blades to-frequently split at the lower part of the opening, which is entirely obviated by my improved mode of fastening the blades to the shaft. The opening in the bottom of the cylinder is of a width corresponding to the` length of the moulds ain the revolving table E, and each of the screw-blades M has a part or shoulder, c, of

suiiicient size to allow them to freely revolve in the opening in the bottom'of the cylinder L. These shoulders c are a continuation of the lower curve ofthe blades, 'and diverge in opposite directions from the centre of the blades.

The cylinder L is secured on a platform or table, N, which is supported bythe beams G and standards d, as shown in figs. 1 and 2. l

The moulds a in the revolving table E are of the usual construction, but the interval or spacebetween each two moulds I cover with steel plates, e. Revolving mould-tables are now commonly cast, and the continual rubbing ofthe clay on their surface verysoon wears them'out, and makes them uneven, especially at the long' edges of themoulds, which results in the brick being made with uneven edges, and of au uneven appearance.

thus controls the amount of pressure'exerted through the follower.

` n in the middle of the end-pieces n. i These rods are kept in an outwardly-projecting position by means of theyv side view clearly shows this improvement.

"position of the pressing and `fillingscrew blades,

`by' another improvement on brick-machines.

i the striker-plate.

abecome uneven, one follower-roller,

caused by the friction of the same between the two metal surfaces.

, leises I prevent this diiliculty by letting the steel plates ein between the moulds a, as described, the edges andsurface of which will be polished by the friction, and then prevent the adherence of clay to the surface ofthe revolving table, and` consequent resistance or friction.

These steel plates e will be so fitted and secured" to thc face of the mould-wheel, that they can be readily -detached when worn by use, and others substituted in their place. By this means the necessity of making a newmonld-whcel at short intervals is entirely obviated, and this is of special importance where the machines are to be used in country places or small villages, where large foundries and machine-shops do not exist, as in such cases the machine can be suppliedin the first instance with any desired number of extra plates,

whichcan be inserted whenever required, without taking the machine apart, or stopping its use but for a fcw moments.

In figs. 2 and 3 my improvements in the striker-plate are clearly shown. f is a short plate, cast with and on thecylinder L, a suiiicient distance -above the revolving mould-table E to allow the striker-plate g to freely slide under it. Near the cylinder, and about the middle of this plate f, is a hole, through which a rod, h, passes, andrcsts' against the surface of the striker-plate, g. The upper endof this rod is provided with aserew thread, g, which passes through a lug, g2, `on `the upper cross-beam,V and is made adjustable by a nut, z'. By adjusting the rod L by means of the nut, it can be made to press more or less on the striker-plate g, according tothe pressure the same is desired torexert on the clay in the moulds. .At its ontr end the plate g has a short post, t", provided with a horizontal hole, ,through which a rod, t?, passes, the rod being pivoted, on the plateg at z'`. It will be seen that the`striker-plate g is thus held merely by thelfriction of the ro'd i: -in 'the post il, which is regulated by' a setserew,j, and by the friction ofthe rod li on its surface.

i The rod h adjusts the pressure the plate g exerts on thebricks in the moulds, and thc rod i2 keeps the plate in place. Shouldany stonesV or stems get Ainto any rof the moulds, which cannot pass,` under the striker-plate, and threaten to do damage to the machine,`the friction'of the red i in the post t" is not so powerful as to prevent the striker-plate from slipping from its place, which at once indicates to the attendant that the mould over which it lies must be cleared. The 'amount of friction is adjusted by the.sctscrcw j.

As the striker-plate exerts its pressureupon the top of the bricks, it often happens that the lower part of.

the'same is less dense or compact than the top, thusmaking a .weak and uneven brick. `I overcome this defect 1 i i i The stationary plate, D, bears the usual circular cam, O,h.y means of which the followers are enabled to discharge the bricks from the moulds. I form a horizontal slet, le, in the straight part' of the cam,just under ln this slot, by'means of a set-screw and nut, It", I secure a plate, Z, having an inclined upper" edge, and provided with a vertical slot, Z. As the followers bring the bricks under the striker-plato,'its roller ascends the inclined plate Z, and thus an equal-pressure is exerted on the brick from all sides, and its cvenness of density is certain. The plate `Z is adjustable by means of the slots'c and l', both vertically and laterally, and

Figs. 4 und 5 are detached views of the follower, which consists of the mainT-shaped part m, the'cndpieces n, and the top-plate a. A peculiarity of my follower is that its roller does not, as in other brick-machines. rest on the cam O during the entirei'revolution:

of the revolving table E, but comesin contact with the same only on its inclined part, o', as shown in figs. 1 and 3. Isupport my followers bymeans of rods p, pivoted in recesses spring q, one end of which is fastened in the recess n', whilst the other bears 'against the rods p. The moulds, `at the lower part of their inner sides,

When havingpassed the incline, however, thefollo'wer again sinks down in the mould, .the springs q forcing out the rodsp from the recesses n as the sides ofthe slots r diverge, `and cause the lower ends of the rods to rest against the shoulders lr.4 y

The wear and` tear, of the follower rollers in common machincson the inclined cam causes the 'bricks to or one place on the inclined cam,wcaring away more than another. It will be easily understood that by my mode of supporting the follower, this difficulty is entirely overcome.

The length ofthe rodsp will of conrse`determinethe thickness of the bricks. To enable me to change the size, and to compensate'forany wear and tear of the parts, I make the lower endsof the rods p adjustable, by providing therewith ascrew-thread and a screwcap, s, the operation of which will be easily understood. In iig. 5 the rodp on the left side of the follower is shown in position when the latter is on the incline o', and the right one in position when the follower is just about to passunder the cylinder L. i Y

Inmachines in which the top-plate of the follower is made adjustable, and covered with cloth, the cloth is usually sewed on to the plate, perforations being provided for the thread. Great inconvenience, however, is experienced in this mode of fastening,`as the threads on the under side of the plate break continually, which is I cast this plate with a recess, t, around and across its under side, and with 'suitable perforations passing through the same.V i Into these recesses I place stripsof leather, and through and over this I make the stitches. The leather being a soft material', no danger arises of breaking the thread, and it is dense enugh to secure the cloth to be held iirmly. In iig. 4, a sectional has before been made adjustable on its front side, the rear part being hinged toF the follower fon the purpose of compensating for the greater compactncss erf the brick on the rcarside. But it is not always on the rea-r side that the brick is made'denser,` as circumstances, such as the often bring the greatest density to the centre of the brick. To

am aware that the top-plate of the follower arc provided with inclined slots r', forming atthcir lower end a shoulder, r. j .i Against these shonldersr -the ends of the rodsp rest when supporting the follower, but when the inelinefof1 elevates the follower, the converging sides of the slots r force the rodsp against th'e springs q into the recesses n".

'lasse 3 enable me to adjust either side, as circumstances may require, I make the top-plate of thevfollower entirely detached from the same, with its edges bevelled as shown, and secure it to the .follower by means of screws, u, as shown in iig. 4, and to adjust it, use set-screws, t', placed on the outer edges of the plate. Thus, ifI desire to adjust eitherv side of the plate, I elevate or lower it, by means of the screws v, and themsecurely hold it by means of the screws u. j

/ I have also an improved mode of securing and 'adjusting theroller w of the follower, by pivoting it in a box, w1, which slides in a recess, wg, in the under side of the 'main part,` m, and holding it by 'set-screws, y, while their position in the recess w2 is adjusted by set-screws z, against which 'the box bears.

By all these means of adjustment, I am enabled to x the moulds to a nicety, to produce any-sized brick,

being at the same time certain that it will come out even and 'compact in every part.

Having thus describedmy invention, what I claim isy 1. Securing the striker-plate in position, bymeans of therod z'and set-screw j, arranged to operate substanf tially as described. Y

2. The'rod h, provided with a nut, z', and arranged to bear upon the striker-plate g, substantially as set forth.

3. I claim facing the iron mould-wheel E, above described, with the detachable V-shaped steel plates e, substantially as set forth. l

4. The incline Z, made adjustable both horizontally and vertically, for varying the pressure and lpressing thebrick from b'elow, substantially as described.

-5. Providing the follower m with the hinged supports p thereon, and tle springs q, for supporting the follower clear from the track while the moulds are passing under the hopper, substantially as described.

6. The combination and arrangement of the hinged supports p, nuts s, and the shoulders r in the mould -wheel, for adjusting the follower to vary the thickness of the brick as desired.

, 7. Providing the follower' m with a friction-roller, w, that cansbe adjusted to compensate' for the wear ot the rollers, or the track, or both, substantially as set forth.

8. Securifngthe cloth to the plate by means of the grooves #,and leather strips placed therein, and sewing v through the leather, substantially as described. i

9. The plate a, with 'bevelled edges, and adjusted on the follower m by means of the screws, -substantially as set forth.

. E. P. H. CAPRON. Witnesses:

W. C. DODGE, j H. B. MUNN.

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