US1169808A - Brick-machine. - Google Patents

Description

W. E. HARMON.

BRICK MACHINE.

APPLICATION FILED FEB. 24, 1915.

1,169,898. Patented Feb. 1, 1916.

2 SHEETS-SHEET I.

MWJ $6102;

THE COLUMBIA PLANOGRAPH c0., WASHINGTON, n.

W. E. HARMON.

BRICK MACHINE.

APPLICATION FILED FEB.24. 19x5.

Patented Feb. 1, 1916.

S-SHEET 2.

parts in the several figures.

UNITED STATES PATENT. OFFICE.

WILLIS E. HARMON, OF PORTLAND, MAINE, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, T0 HORACE PURINTON 00., OF WATERVILLE, MAINE, A CORPO- BATION 0F MAINE.

BRICK-MACHINE.

Specification of Letters Patent.

Patented Feb. 1, 1916.

Application filed. February 24, 1915. Serial No. 10,227.

To all whom it may concern: I

Be it known that I, l/VILLIs E. HAnMoN, citizen of the United States, residing at Portland, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in Brick-Machines of which the following is a specification.

' This invention relates to improvements in brick machines. It is designed to provide a power driven machine so constructed that, if, for any reason, the operation of the machine is obstructed while the power is on, some parts of the machine will yield, thereby preventing damage to the machine.

It is further designed to provide a machine which is simple in construction and operation and which may be operated with great rapidity.

In the drawings herewith accompanying and making a part of this application F igure 1 is a perspective view of my improved brick machine; Fig. 2 is a side elevation with parts broken away to show the construction of interior parts, some of the parts being omitted for clearness; Fig. 3 is a detail sectional view taken on line :r-zv, Fig. 1, of the mechanism for operating the mold carriage actuating lever; F igs.v l, 5, and 6 are side elevations of the double cam, toothed disk and clutch, respectively, which operate said lever, and Fig. 7 is a detail view of the safety mechanism interposed between the power and the mold carriage to prevent injury to the machine due to accidental obstruction to the normal movements of the carriage.

Same reference characters indicate like In said drawings A is a hopper having discharge openings at in the bottom thereof. In said hopper is mounted suitable rotating agitators and mixing devices 2 and 3 attached to a vertical shaft L driven in any convenient manner by power mechanism not shown. Below said hopper is a chamber 5. In one of the vertical walls 6 of said chamber is an opening 7 in the front of which is placed a guide plate 8, preferably curved. Adjacent said openings and forming a part of said chamber is a press boX 9 having a cover 10 on the front of which is a plate 11 which is adapted to move just inside the plate 8. In the bottom of the chamber is a series of discharge openings 12 which are substantially the size of a brick. On shaft 1 and within chamber 5 are paddles 5 which tend to convey the material toward said discharge openings. Adapted to reciprocate below the press boX and chamber is a mold carriage 13 upon which the brick molds are secured, the reciprocation of said mold carriage being effected by mechanism hereinafter described. The mold carriage carries a. horizontal raised plate 14 which closes the discharge openings when the carriage with the molds are withdrawn. The parts heretofore described are substantially the same as in the brick machines in common use and form no part of my invention.

Secured to one side of the machine frame B, preferably'in a bracket 15 is a rotatable shaft 16 adapted to be driven continuously by power mechanism not shown. Upon this shaft is loosely mounted a double cam 1718. Keyed on said shaft outside said cam is a notched disk 19. Outside said disk is a slidable clutch member 20. Pivotally attached to the outside of the cam is a pawl 21, the free end of which is constantly impelled toward and into locking engagement with said notched disk by a spring 22, but is held normally out of engagement therewith by a roll 23 on the pawl 21 which normally is in the path of clutch 20. The clutch is operated by a lever 24:. attached at oneend to a bracket 25 on the frame by a pivot pin 26 pasing through a slot in theend of the lever. Intermediate the pivot and handle ends the said lever isattached to the clutch by a pivot pin 27. A spring 28 attached to the frame and to the clutch operating lever is designed to automatically return the slidable clutch to disengage the pawl from disk 19 and stop the machine after each mold has been pressed.

Pivotally mounted on a post 29 on the side of the machine is an oscillating lever 30 terminating above the pivot point in diverging arms 3132, each provided with acam roll 33 located in the path of cam 18.

Below the mold carriage and secured to the frame is a rotatable shaft 34: upon which is rigidly mounted a crank 35. In the free end of crank 35 is a bearing 36 having a vertical arm 37. On this bearing is an antifriction roll 38.

Pivotally secured'to the end of lever 30 is a link 39which rests yieldingly upon antifriction. roll 38, said link being provided with a recess 66 with inclined sidesto give depending flange 44 which extends far enough to engage and hold the link against lateral displacement. The tension of the clamp is regulated by a spring 45 interposed between the clamp and adjusting nut 46. An antifriction roll 40 is mounted in the clamp, as seen in Fig. 7, to engage the upper edge of the link, if desired, to prevent binding and to clear away hardened clay that might collect on the upper edge of the link.

On shaft 34 are rigidly mounted cranks 47 which are connected to the mold carriage by links 48. Mounted upon the frame above the press box is a shaft 49 to which is rigidly secured one or more cranks 50 which are connected by links 51 to the press box plunger 10 which serves both as a cover and press plunger.

Pivotally mounted upon the side of the machine is a lever 52 having an arm 53 ex tending rearwardly and provided'with an antifriction roll in the path of cam 17. Pivotally mounted on shaft 49 is a crank 54, and connecting the ends of lever 52 and an offset block 55 forming a part of crank 54 is a link 71 which extends loosely through said block and has a regulating tension spring 56 interposed between said block and an adjusting nut 57 on the link. Rigidly secured on shaft 34 is a crank 58, and connecting said cranks 54 and 58 is a link 59, the connection of said link with crank 54 being made by means of a pin 60 set in said crank and projecting into a slot 61 in the end of the link. A friction belt 62 engages the hub of the double cam with suflicient tension to prevent movement of the cam on its shaft, due to gravity. A spring 64 forms a section of the belt and gives it a yielding tension. The ends of the belt are secured in a strut 65 on the bracket 15 and its tension can be adjusted by means of a holding nut 67. The mold carriage travels over antifriction rolls 68.

The cover to the press box is provided with an air valve 69 whichprevents the formation of a vacuum in the top of the box.

The operation of the machine will now be described.

In Figs. 1 and 2 the machine is shown in ready to start position. The clutch shifting lever is moved to the right until it passes beyond the roll on the pawl which then engages the notched disk and starts the machine. As the double cam revolves it moves the carriage operating lever tothe right which through intermediate mechanism carries the carriage wlth the molds under the press box to be filled and moves theslotted link down. .As the double cam continues to revolve, at the proper time the back cam engages the roll on the press plunger operating lever which through intermediate mechanism 'forces down the press plunger into the pressbox and also crank 54. This forces the material into the molds. As the cam continues to revolve the front cam engages the other arm of the mold carriageopera-ting lever and returns the carriage to the point of 1. A brick machine, a press box having discharge openings in the bottom, a press box plunger and means for operating it, a mold carriage and means for imparting an oscillating motion to said carriage including as one of its elements a link arranged to slip when the strain exceeds a certain tension.

2. In a brick machine, a press box having discharge openings in the bottom, a press box plunger and means for operating it, a mold carriage, an oscillating mold carriage operating lever having two diverging arms each provided with a cam roll, a cam adapted to engage said rolls alternately and connecting mechanism intermediate said lever and mold carriage including as one of its elements av link arranged to slip when the strain exceeds a certain tension.

3. In a brick machine, a press box having discharge openings in the bottom, a press box plunger and means for operating it, a mold carriage, an oscillating mold carriage operating lever having two diverging arms each provided with a cam roll, a-

cam adapted to engage said rolls alternately and connecting mechanism intermediate said lever and mold carriage including a link having a recess, an antifriction roll normally seated in said recess and a yielding clamp arranged to hold said link yieldingly upon said roll, and to allow it to slip when the strain exceeds a certain tension.

4. In a brick machine, a press box'having discharge openings in the bottom, a press I box plunger and means for operating it, a mold carr1age,an oscillating mold carriage operating lever having two diverging arms each provided with a cam roll, a cam adapted to engage said rolls alternately and con rolls when the strain exceeds a certain tennecting mechanism intermediate said lever sion. 10 and mold carriage including a link having a In testimony whereof I aifix my signature recess, an antifriction roll normally seated in presenceof two Witnesses.

"- in said recess and a spring controlled clamp WILLIS E. HARMON.

having an antifriction roll arranged to press Witnesses With yielding tension upon the top of said ELGI'N G. VERRILL, link, whereby the link will slip between said CHARLES L. Fos'rnn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, 13.0. Y

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