US878417A - Artificial-stone machine. - Google Patents

Description

' No. 878,417. PATENTED FEB. 4, 1908.

- T. A. MQMURTRIE.

ARTIFICIAL STONE MACHINE.

APPLICATION FILED APR. 8.1907.

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T. A. MOMURTRIE.

ARTIFICIAL STONE MA CHINE.

APPLICATION FILED APR. 8.1907.

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PATENTED FEB. 4, 1908.

'T. A. MOMURTRIE. ARTIFICIAL STONE MACHINE.

APPLICATION FILED APR.1907.

3 SHEETSSHEBT 3.

m m M THE NORRIS PETERS 60., WASHINGTON n. c.

UNITED STATES PATENT OFFICE.

THOMAS A. MoMURTRIE, OF LOS ANGELES, CALIFORNIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO KIlVIMERLE CONCRETE MACHINERY COMPANY, OF LOS ANGELES, CALIFORNIA, A COR- PORATION OF CALIFORNIA.

ARTIFICIAL-STONELMACHINE Specification of Letters Patent.

Patented Feb. 4, 1908.

To all whom it may concern:

Be it known that I, THOMAS A. MoMUR- TRIE, a citizen of the United States, residing .at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Artificial Stone Machine, of Which the following is a specification.

This invention relates to machines for forming artificial stone, and the objects of the invention are to improve certain details of the construction of such machines as will hereinafter be pointed out.

Referring to the drawings :Figure 1 is a side elevation of the machine arranged for producing one form of stone, the dotted lines illustrating the position of parts of the machine when opened to permit of removal of the stone, this machine being termed the side face machine. Fig. 2 is a plan view of the machine as shown in Fig. 1. Fig. 3 is a side view of the machine arranged for producing another form of stone, being what is shown in Fig. 3.

termed the face down machine. Fig. 4 is an end elevation of the face down machine Fig. 5 is a side elevation of the face down machine shown in Fig. 3 with the machine closed for the removal of the cores. Fig. 6 is a detail view in plan of the improved adjustable stripper plate. Fig. 7 is a cross section on line x a: Fig. 6. Fig.8 is a view similar to Fig 6 showing the stripper plate adjusted for another size of stone. Fig. 9 is a detail view showing various sizes of spacing plates employed in securing the various adjustments of the stripper plate. Fig. 10 is a perspective View of a corner post.

It should be understood that in the (llEH ings and description of this machine, the machine is shown and spoken of in one instance as the side face machine and in the other instance as the face down machine, and for the sake of clearness these two forms of themachine are treated as distinct from each other, although the machine as a whole is capable of being converted from the face down form to the side face form, and vice versa. That is to say, one form is not what is usually termed a modification of another preferred form, but both forms are preferred forms, and the machine is adjusted into either form according to the stone which is to be produced.

The side face machine shown in Figs. 1 and 2 is employed for producing a stone faced on two sides, or on all four sides if required. The stationary base frame of the machine comprises a pair of horizontal bars 1 having down-turned legs 2 at each end thereof, each pair of legs being united by cross rods 3. Each horizontal bar 1 is offset at 4 as shown in Fig. 2. A pair of bolts 5 form pivots for the entire superstructure which is the main part of the machine, this superstructure being adapted to swing bodily on the pivots 5, or to be opened with pivots 5 as fulcra, as will be seen.

The superstructure comprises two sections a and I), each section being L-shaped in side View. The section a comprises a pair of L-shaped bars 6 each composed of arms 7 and 8, the arm 7 being pivoted to its pivot 5 on the horizontal bar 1 and the arm 8 being formed with a handle 9. Each arm 7 and 8 is provided with a series of bolt holes 10 through which bolts 10 pass for securing to either arm 7 or 8 a clamping plate 11. The section I) comprises a pair of L-shaped bars, each bar having an arm 12 and an arm 13. The L-shaped bars. of section b are united by rods 13 Each arm 12 is provided with a slotted extension 12 and a bolt 12 passes through the slotted extension 12 into the respective arms 7 of the section a. Secured to one set of legs 2 is an offset lug 12, being secured to the lug by means of a bolt 12 and capable of vertical adjustment, the lugs 12 afl'ording seats for the arms 12. Each arm 13 is also provided with bolt holes 10 permitting the attachment of a set of clamping plates 11 to the arm 13. In the side face machine these clamping plates 11 are attached to the arms 7 of the section a and to the arms 13 of the section b.

Clamped between the respective clamping plates 11 and the respective adjacent arms are four pairs of supporting bars 1 1, each supporting bar 14 having a slotted foot 15. Fastened' by bolts 16 to the slotted feet 15 of the supporting bars 1 1 of the section a is a corner post 17 to which is fastened a face plate 18 by means of bolts 18, while fastened by similar bolts 16 to the supporting bars 14 of the section b is a corner post 17 to which is fastened a face plate 18 by means of bolts 18. Each face plate is provided with a smooth face if the stone is to have a smooth face, or with a roughened molded face if the stone is to have a face to imitate a rough stone.

vided with correspondingly shaped molds or matriXes for producing such ornamentation on the face of the artificial stone.

The two sections a and b are locked together as shown in Fig. 1 by means of a pair of earns 19, each cam being a double cam fastened by a bolt 20 to its associated arm 8 and having a convex face 21 and a circular inclined cam face 22 formed as a flange on the cam. Each arm 13 is notched as shown in Fig. 1 providing a shoulder 23 and a hearing face 24. Fastened to each arm 13 is an offset lug 25 having a slotted foot 26 through which a bolt 27 passes, adjustably securing the lug to the arm 13 and the lugs 25 are adapted to receive the respective arms 8 of the section a.

Resting upon the arms 12 is a board 28 which supports the material being molded and by means of which the artificial stone is removed from the machine after the stone has been formed. Gates or end face plates 29 are arranged at each end of the face plates 18 and rest upon the board 28. These gates 29 are supported in position by adjustable lugs 30 which are attached to the corner posts 17. The gates 29 may be arranged at points intermediate the length of the face plates 18 when stones of shorter length are being formed, as is well known in the art. The gates 29 when arranged. at the ends of the face plates, as shown in Fig. 2, are for the production of a long stone the full length. of the face plates 18.

Preparatory to molding the stone, the machine is arranged as shown in Fig. 1, the two sections a, and 5 locked together, the arms 9 being held securely in their seats in the lugs 25 by means of the cam faces 22 which bear against the shoulders 23 of the arms 13. The convex cam faces 21 are forced against the bearing faces 24 of the arms 13 and force the arms 13 inward, thus drawing the two face plates 18 tightly against the end gates 29. This double action of the cams is accomplished simultaneously when the cams are swung around tight.

In forming the stone the machine is arranged as shown in Figs. 1 and 2 and the material is tamped on top' of board 28 be-- If ornamental faces are to be formed on the stone, the face plates 18 will be prothe pivots 5, and acting in the slotted eX- tensions 12 push forward the arms 12, the latter sliding in the lugs 12 and carrying the arms 13 and attached face plates 18 into the hind the end gates 29, thus allowing the end gates 29 to be withdrawn from the ends of the stone. The board 28 upon which the stone rests is then removed from the machine and another board inserted and the machine restored to its position as shown in Fig. 1 ready for the molding of another stone.

When the stone is to be formed hollow, a stripper plate is employed in the machine, through which stripper plate the cores are removed. Figs. 3, 4 and 5 show the machine adjusted for producing such stone and equipped with the stripper plate and appurtenances for supporting the stripper plate. Figs. 6 to 9 show details of the improved form of stripper plate. 3

Heretofore in machines of this character it has been necessary to provide with this machine a number of stripper plates of various widths, lengths and openings, and it is one of the main objects of my invention to eliminate the necessity of a number of stripper plates and to provide a single stripper plate which is capable of being adjusted for each size of stone and core. The stripper plate comprises a pair of plates 50, each plate having a series of holes 51, and secured to the plates 50 are cross plates 52, each plate having slotted'lugs 53, bolts 54 passing through the lugs 53 into certain of the holes 51 according to the spacing desired between the plates 52. Each plate 52, as shown in Fig.7, lies flush with the plates 50, the lugs 53 of the plates 52 being offset to permit of this. With each stripper plate are provided a set of plates 52 raduated in widths and lengths as indicated in Fig. 9, by means of which the space between the two plates 50 may be of the desired width, whilethe regulation of the spaces between plates 52 is secured by the series of holes 51.

. The lower plate 50 of the stripper plate is attached by bolts 55 to lugs 56, the latter being pivoted at 57 to slotted lugs 58 which are secured by bolts 59 to the arms 8. The stripper plate is held up in position by a pair of cams 60, each cam being pivoted at 61 to a slotted arm62 which is clamped by a bolt 63 to the arm 8. In this face down machine the face plate 18 is below the stone, the board 28 being at one sideand the stripper plate at the other side. If the lower face of the stone is to be formed at an angle to the side faces of the stone, the supporting bars 14 are shifted by loosening the bolts 10 to incline the corner posts 17 and face plate 18. If the bottom face of the stone is to be at right, angles to the side faces of the stone, then the face late 18 will be adjusted by means of the e amping plate 11 accordingly, as shown in Fig. 3.

In forming the stone the machine is arranged as shown in Fig. 3 and an amount of material is tamped into the bottom between the board 28 and stripper plate and on top of the face plate 18, the material being introduced to about the level of the spaces through the stripper plate. The cores 64 are slipped through the spaces in the stripper plate and the rest of the material is tamped around the cores. After the stone has been molded, the superstructure as a whole is swung on the pivots 5 into the position shown in Fig. 5 with the arms 12 resting in lugs 12. This brings the stripper plate on top and permits the core blocks to be withdrawn vertically from the stone. After the core blocks have been withdrawn, the cams 60 are swung away from the stripper plate and the latter is swung back on its pivots 57, then the cams 19 are relaxed, and by grasping the handles 9 the section a is swung back in the manner similar to that shown in Fig. 1, the section I) also sliding to the left and carrying the board 28 and stone with it. The board 28 and stone are then removed from the machine and the machine then restored to original position shown in Fig. 3.

What I claim is 1. In an artificial stone machine, a base frame, a superstructure pivoted thereto, the superstructure comprising two sections, clamping plates carried by the respective sections, supporting bars adjustably held in position on the respective sections by said clamping plates, and face plates connected with and supported by the supporting bars.

2. In an artificial stone machine, a base frame, a superstructure comprising two sections, each section formed of a pair of L- shaped bars, the bars of one section being pivoted to the base frame, the bars of the other section having slotted ends, and studs on said pivoted bars engaging in the slotted ends of the other bars for sliding one section along the base frame when the pivoted bars are unlocked and swung on their pivots.

3. In an artificial stone machine, a base frame, a superstructure mounted thereon comprising two sections articulated together, one of said sections being pivoted to the base frame, locking cams on the pivoted section, each locking cam having a convex cam face and an inclined cam face, the other section having notches, each notch affording a shoulder, and a bearing face adapted to coact with the respective cam faces on the associated cam.

4. In an artificial stone machine, a base frame, a superstructure comprising two sections, each section formed of a pair of L- shaped arms, the arms of one section being pivoted to the base frame, the arms of the other section having slotted ends engaging studs on the pivoted arms, and adjustable off-set lugs on the base frame for supporting the arms which have the slotted ends.

5. In an artificial stone machine, a base frame, a superstructure comprising two sections, each section formed of a pair of L- shaped arms, the arms of one section being pivoted to the base frame, the arms of the other section having slotted ends engaging studs on the pivoted arms, adjustable offset lugs on the base frame for supporting the arms which have the slotted ends, and offset lugs attached to the vertical arms of a section and adapted to receive and support the arms of the pivoted section, and locking cams carried by the pivoted section for forcing the arms into said latter lugs.

6. In an artificial stone machine, a base frame, a superstructure mounted thereon comprising two sections one of which is pivoted to the base frame, the other being articulated to the pivoted section, adjustable arms secured to the pivoted section, lugs pivoted to said arms, and a stripper plate adjustably secured to said lugs.

7. In an artificial stone machine, a stripper plate comprising a pair of separate parallel plates both in the same plane, and interchangeable spacer plates of various lengths with means for detachably securing them to the parallel plates in the same plane therewith to connect and adjustably support said parallel plates whereby the space between them may be varied.

8. In an artificial stone machine, a flat rectangular stripper plate comprising side strips and cross strips and means for adjust- THOMAS A. MeMUR-TRIE.

In presence of GEORGE T. IIACKLEY, FRANK L. A. GRAHAM.

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