US109313A - Improvement in brick-molds - Google Patents

Description

N.IPETERS, PHOTOJTHOGHAPNER, WASHINGTON, D. C.

f naar Yuna dition I intim,

GVOTTLIEB GR'Anss'Ln, or HAMILTON, OHIO, Assiettes fro HIMsELr AND L. nwmrn.

Letters Patent No. l109,313, dated November 15, 1870.

IMPROVEMENT IN BRICK-MOLDSI The Schedule referred to in these Letters Patent anmaking part of the same.

To all whom it may concer/nf.;

. Be it known that II, Germani; GnAEssLn, of Ilami ilton, inthe countyv of Butler and State of Ohio, have invented .certain new' aud vuseful Improvements in Brick-Molds; and'I doherebydeclare that the following is afull, clear, land exact description thereof,v

reference beinghad to the accompanying drawing VAmaking part of this specification and to the letters of -reference.markedthereon, like letteisindicatinn like parts wherever they occur'.

, To enable others skilled in the art to construct and luse my invention I will proceed to describe it.

.'j-My inventionl consists in a brick-mold, provided 'with'a sliding bottom .and a steel lining; and also in adevice for oiling or lubricating the .interior Ot' thc mold, as hereinafterdescribed.

In the drawing-- Figure 1 is a ltop-plan view of my mold rca-dy for use, the bottom being closed.

Figure 2 is a side elevation of the same. v Figure '3 is'a bottomplau`view of the mold, with Vthe bottom partially opened.

Figure 4 is an end view of tlie mold, with bottom closed.' *Y Figure 5 is a cross-section of the mold, with bottom partially opened. f

Figures 6 and 7 are Vrespectively a side' eleva-tion Aand a cross-section of thelubricatiugdevce.

In constructing vmy mold rst provide a strong wooden frame, A, of any desired form, andhaving any convenient number of cells or Openings C, of the tbl-rn of the required brick.

'.lhe inner walls of thesccells I line'with sheets or plates of steel c, by which I obtain sharper cornersA and edges, and smoother surfaces ou the brick, than where wooden surfaces-.are brought in contact with the clay.

On the under sidehf the cross-bars of the frame I secure metal bars e, of a dovetail or T-form, in-crosssection, for thc purpose of-holding and guiding the slid# ing bettom. v

B represents this bottom, made of a. form and size to cover the lower side of the frame, and having steel .platesd secured toits face, as shown in gs. 2, 4, and 5.

The ends of these steel plates engage under thev bars e, and thus hold the bottom in postionagainst In the back side of the. two middle cross-bars of the frame I make grooves h, and in these grooves I pivot arms f, and connect the outer ends of these arms by a handle, y, as shown iu figs. 3 and 4.

- heu these arms are turned down into the slots the bottom may be `slid back so as to close the mold,

-hut vupon pulling up the handle g the arms will slitte.`

back the bottom and-openthe lower side of cells C, as shown in gs. 3 and 5.

Y To the hack side of theframe A, I secure a plate or shield, j, whioh'is bent outward so as to let the edge of the bottom pass under it, as shown in iig. 5'. The purpose of this shield is to form a convenient'.A h old for the operator, and to prevent his fingers from get-ting into the cells, and thus bebruised or injured, when the bottom-is closed.

4In using my mold the bottom is closed and the cells filled with clay iu the usual manner.l The mold is then turned bottom side-up on a dat surface, and thc handle raised so as te slide back' the bottoni, when thcmold, upon being raised, will-part readily from the brick.

VIubrick-molds .of all kinds it is' necessary, before the brick can he tnrnedout, that air shall be admitted into the cells behind them. In molds of the ordi nary construction having stationary bottoms it is usual to leave a slit or opening along in the lower vedges of the cells for this purpose, and when the clay is pressed into thc-cells a thin film of clay is worked out into these slits, this ilmbeiug broken oii when the bricks are turned out, and thus the bricks left with rough, irregular edges." But lin a mold of my construction. it is tightlyclosed while the clay is being molded, and consequently producesbricks having square sharp edges andcorucrs.

For-the purpose of oiling or lubricating the interior surfaces of thc mold I provide a bar, D, having pads or heads E mounted on it,these.pads being equal in number to the cells in the mold, aud ofthe samc form and size, and in the same relative positions as the said cells. i

' The bar D Iseo-ure in a convenient position with the pads uppermost, and thoroughlysaturate the latter with any suitable substance, preferably coal-oil, and after eacli using of.` the mold shove it down over 'thcpads, which thoroughly lubricates the '-cells, it being understood that the bottom is closed during the operation. l l l I n this manner I produce a simple and eic'i'ent de-v vice by which the moldcan be quickly and thoroughly lubricated.

Itis obvious that, if desired, eyesmay besecurd 'to the back edge of the'sliding bottom, through which the arms f shall pla'y, and thus allow of the bottom being closedhy opening the handle y.

Having thus described my invention.

Wha-t I claim isj 1. A portable brick-mold, hnvin` its bottoni B arranged-to slide laterally, substantially as described.

2. In colnbnmton with the molds oreompmtments O, having the steel platea secured to their sides and ends', the sliding bottom B, having the steel plates Z v attached thereto and engaging over the cross-bars c,

:ill constructed and arranged to operate substantially as described. f 3. The combination' of the mold or frame A, sliding bottom B, and levers f, constructed mld arranged to operate *as set forth. l

4.111 combination with zb portable brick-mold, the pads E, mounted on supports D, and having alubricnting-snrfwe' on their bottom :md sides for lubricating the interior of' the molds, as set forth.

GOTTLIEB GRAESSLE.

Witnesses:

J. L. KIBKPATRIGE., M. D., C. S. CURTIS.

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