US8158A

US8158A - Mahlon gregg

Info

Publication number: US8158A
Authority: US
Publication date: 1851-06-17
Anticipated expiration: 1868-06-17

Description

UNITED sTATEs PATENT oEEIoE.

e MAHLON GREGG, OF PHILADELPHIA, PENNSYLVANIA.

EEICK-EIACHINE.`

i Specification of .Let-.ters Patent 8,158, dated June 17, `1851.

l To all whom t may concern:

Be it known thatI, MAHLON GREGG, of thecity and county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Brick-` Making Machinesgand I` do hereby declare the following to be a full and clear descrip tion of the construction and operation thereof, reference being had to the annexed drawings, making part of this specification.`

i Figure 1 is a top View ofthe machine. Fig... 2 is a jlongitudinalvertical section,- the presser having been advanced and a brick molded, and simultaneously therewith a brick discharged from the -mold diametrically opposite. l Fig. 3 is aihorizontal sectionofthe mold wheel. Fig. tis a side view ofditto. l [1..

Where the same letters of referenceoccur on the above figures they indicate the` same parts. i

.iDescrz'ypz'om-AIhorizont-al wheel A, sixt formed spaces which constitute the molds I,

in which the bricks are formed. The surfaces of these molds are made smooth, and each mold is furnished with a piston J, which is accurately fitted thereto,and to the shank of which is attached a small vertical plate which eXtends downward (through an aperture t made for the purpose) an inch or `more below the bottom of the wheel. Upon the plate H, is adjusted a circular ratchet plate K, two feet in `diameter, in the upper surface and near the periphery of which is a circular, groove the bottom of which consists of a series of inclined planes (s s) which constitute theteeth of a circular ratchet ;-the number of teeth A corresponding with the number of molds in the wheel. Over the projecting disk or plane A of the wheel on the left of the moldcircle, is adjusted a hopper L, supported by two posts (c c) and by a cross-bar (9).- This hopper is so adjusted as to be nearly ,in

Vthe mold wheel` at the` same time.

contact with `the `planeofu the wheel, and

with the periphery of the j circular' plates and `blocks3+and through the left side of the hopper andat the bottom thereof, is an aperturethroughwhichworks a horizontal presserulf; the left end of which `(being round.) is made to slide through' an aperture` `ina transverse bar `(u2) of `an" adjust-able frame T, whichis connectedto the platform D. A horizontal transverselever Y, is connect-ed by a fulcrum `pivot tothe `side of the `adjustable frame, and connectedalso tothe presser at (r) andfextending to the front of lthe machine is connect-ed to` the crank of a steam engine or other machinery whereby a horizontal oscillatory motion is produced.

`To theunderside of the presser is attached a horizontal bar; to the top of .which is attachedia block (o) and to its right end `is attached aplate (u) which is bent upward. The object of the block (o)l and bent @plate (u) is tolmovethe vertical plates (n) `of the `pistons J, simultaneously on the advanceof the presser Pi-the piston in the ,hopper being moved centerward the wheell and the piston diametrically opposite bef ing moved from the center` of the wheeland thus mold and discharge a. brick from On one side of the presser, a hook-rod (w) is connected to the lever Y and extends r-ightward terminating in a. hoo-k which enters` the ratchet groove (s s) `and occasionally takes to the teeth thereof. Y Vithin the hopper `and on the front side of the horizontal presser, is a vertical,r presser V, the top of which is connected to an inclined lever (fr) the rightendof which is ".bonnected by a hinge joint to the side ofthe hopper, and the left end is connectedto the right end of an inclined connect-ingbar (2), the left and lower end of which is connected with the lever Y; so that when the horizontal presser is moved to the fleft, the vertical presser V is depressed, which has the effec-t of filling the space vacated by the receding movement of the horizontal presser; and when the presser Pis made to advance the .vertical presser V is elevated and so on in and by the same movement, the block (o) and plate (u) Fig. 2 of the horizontal bar (m) each impinges upon one of the vertical plates (n) and the two pistons J, J, to which they are attached, are thereby moved to the right, whereby the mold on' the left is opened to receive the clay inthe form of a. new brick, and the formed brick in the mold on the right is discharged therefrom. At the same time the hook (w) is 'moved to the right far enough to take to another tooth of the ratchet; and by a reverse movement of the hook rod the posit-ion of the wheel is thereby changed, and another mold is brought to the hopper-the horizontal presser P is withdrawn, and they vertical presser V is depressed by its connect-ion with the horizont-al presser P, thereby depressing` the clay and lling the space vacated by the receding movement of the horizontal presser.

When the pistons recede centerward the wheel, they come in contact with the back of the molds J, whereby they are prevented from receding too far; whilst their outward movement is governed by the plates (n) striking against the shoulders of the apertures (t) in which they move. Each movement of the mold wheel is limited by means of pins (i) which project from the bottom of the wheel, and are so arranged that when the wheel arrives at its proper position, one of the pine will strike the block (o), .which is made to move rightward on the advance of the presser P, and allow the wheel to turn when the brick shall have been molded. Such port-ions of the edges of the circular plates G and H, as constitute the edges of the molds above and below, are made sharp and straight that the bricks may be molded smoothly and of proper form. It should have been stated that the shanks of the pistons J, are supported by means of pins projecting from t-he wheel, over which they slide.

As a variation in the construction of this machine, a mold may be formed in the end of the horizontal presser and the same may be furnished with a. piston to discharge the molded bricks therefrom leaving the bricks upon the annular plane of the wheel.

Having described my improvements in the machine for making bricks, what I claim therein as new and desire to secure by Letters Patent, is-

l. The rotating mold wheel A, Gr, I-I, I, C, constructed as herein described, with a series of molds Yin its periphery and an annular plane A, outside of the molds, and furnished with pistons J, arranged as herein described, for the purpose of discharging the bricks from the molds as set fort-h.

2. I also claim the mode herein described,

of changing the positions of the pistons J by means of the bar (m) (attached to the horizontal presser) with its block (o) and plat-e (u) which are made to impinge upon the vertical plates (n) .which are attached to the pistons for that purpose.

3. I also claim the combination of the hopper L, horizontal presser P, vertical nesses.

MAHLON GREGG. Witnesses:

C. BRAZER, WILLIAM GREGG.