US1118540A

US1118540A - Concrete-block-molding machine.

Info

Publication number: US1118540A
Application number: US74891113A
Authority: US
Inventors: Elling Ellingson
Original assignee: BRAGSTAD CONCRETE MACHINERY CO Inc
Current assignee: BRAGSTAD CONCRETE MACHINERY Co Inc
Priority date: 1913-02-17
Filing date: 1913-02-17
Publication date: 1914-11-24
Anticipated expiration: 1931-11-24

Description

E. ELLIN'GSON. I CONCRETE BLOOK MOLDING MACHINE.

APPLIUATION FILED TBB.17,1913. 1, 1 18,540. Patented Nov. 24, 1914.

3 SHEETB"3HEET 2.

6 z 6 L VVENTOR Allarney THE NORRIS PETERS CO. FHUTO-LITHQ. WAEMINGYUN. D. C

E. ELLINGSON.

CONCRETE BLOCK MOLDING MACHINE.

APPLICATION FILED PEB.17, 1913.

Patented Nov. 24, 1914.

3 SHEETS-SHEET 3.

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DAKOTA.

To all whom it may concern r a Molding Machines, of which the following is a specification. d r a ThlS invention relates to concrete block moldmgmachmes, and relates more specifically toa machine of this type adapted pare ticularly for the moldingor formmg of what is 1 generally termed a a sectional block, that is, a molded concrete block which is formed of sections fixedly secured together, but so disposed with relation to,

each other as to provide a continuous air space interiorly of the completed block,

The presentinvention is an improvement upon the device shown, described and claimed in Letters Patent #951,723, granted to Joseph W. Bragstad on March ,8, 12110, and the present invention has for its ob ect manner as to render the device; more posito improve the operating means for manip r lating, the end cores of the mold, in such n tive in its action, and prevent any movement of the end sections of the core process of molding the block.

during the y In the drawings: F'gure 1 is a view in side elevation of a concrete block molding and described in the patent above referred to, it is not believed Ineeessaryto illustrate machine in accordance with my invention, the mold be ng, shown in closed position;

Fig. 2 is ajsimilar view of the machine, the

mold being shown in the opened position.

Fig. 3 is a top plan view of the machine with the mold in the closed position. Fig. 4: is an ,end view of the machine with the supportinglegs partly broken away. Fig,

5 is a longitudinal sectional, viewof the machine withthe mold in the closed position, and, Fig. 6, is a detailperspective view of one ofthe end boards of the mold with its attached operating mechanism and also showing more in detail the wear take-up,

mechanism. 1 v j d The; present invention, like the devlce shown in Patent #951,723 above referred to, employs a mold embodying side and end members, the side members being hinged to movefrom upright to substantially horir z0nta1'positions,and the end memberswhich Specification of Letters Patent.

ELLINGELLINGSON, on cannon, sourrri. nario'rii, assrenon '10 ,BRAGSTAD CONCRETE MACHINERY 00., INQ, or canron. some: mirrors, A CORPORATION or SOUTH CONCRETEELOGK-MOLDING MACHINE.

Patented Nov. 24, 1914. Application filed February 17,1913. SerialNo]. 748,911.

carry a part of the core for the complete block, being adapted to move endwise of the machine toward and away from the center thereof. Certain details of construction: in

the machine shown in said Letters Patent: #951,723, and in my improvement being, therefore in. common, detailed description of such parts is deemed unnecessary, such de tailed description as isgivenfherein being directed substantially to the improvements.

As in the, patent above referred to, I pro- Patent#951,793 above referred to, side and end members are employed, the end mem hers carryingportions ofthe core, which portions of the core cooperate with a vertically-momble core section to form the completed block. n n a In the present invention, like in the device shownin the patent above referred to, the,

end members of thejmoldjcarry core] sec tions which cooperate with a vertically- As the manner 1n movable core section. WhlCll the anchors that secure the sections of the completed block fixedly together are placed in position in the moldis fully shown or describe in detail such feature in the present invention.

Like in the patent above referred to, I

provideffor the mold, a pallet plate 12,, a

which itwill be understood is suitably aper tnred to accommodate the vertically movable core sections used in producing the block. This pallet plate rests upon the bed] or base 10 and cooperates with the side meme here 14. and the end members 15 to form the mold. The sidemembers 14 in accordance with my invention arehinged at the oppo site sides of the bed or base plate to pintle, rods 16 ,which pass through the lower ends of thefribs 17 on said. side members and have their ends received in bosses 18 carried by the sleeves 19 that are adjustably mounted on stub shafts 20 carried by the side rails of thebase or frame. Thesesleeves 19 may be adjusted on the stub shafts 20 to increase or decrease the space between the side members 14, being held in an adjusted position v thereof, and thus hold the side sections in upright position when the end sections are moved up to closed position. In practice,

' the adjustability of the clips or brackets 22 is easily effected by making these in the form ofan angle iron, one leg of which lies against the inner faces of the end sections, and the other leg of which engages the outer faces of the side sections, the end sections being provided with a plurality of apertures 23 through one or the other of which securing bolts are passed for fastening the clips to the end sections.

In Patent #951,723 heretofore referred to, a cable mechanism is employed for open ing and closing the end members of the mold, and in practice, it has been found that these cables stretch or give, resulting at times 1n an imperfectblock, the mold members, and particularly the end members of the mold being unableto resist the strains imposed thereon resulting in an. untrue or imperfect block. To obviate this, isas heretofore stated, one of the main objects of 'ny invention, and I accomplish this by means which will now be described specifically to the embodimentshown. Each end member 15 is provided on its outer face with bearings 24 in which is mounted a rock-shaft 25; the ends of which extend beyond the respective bearings 24, and are connected with the respective ends of the base or bed, by a toggle lock, which when in closed position, serves effectively to resist any movement of the end members of the mold. One of these toggle locks is .provided for each end member 15 and each lock consists of a somewhat triangular bracket 26, the two arms of which are-coir nected at their free ends to the rock shaft 25, and at their outer or united ends, have a downwardly-projecting lug .27 which is pivotally connected by a wear take-up device with a bracket 28 mounted on the end of the base or bed 10. Said wear take-up device as here shown consists of a socket 29 pivotally-connected at its inner end to the lug 27 and having a threaded bore in its other end which receives one end of a right and left hand threaded screw 30, the other end of said screw 30 being received in the threaded bore of a socket 31 which has its outer end pivotally connected to the bracket 28. The screw 30 is operated in any suitable manner, as by forming the central portion thereof with flattened faces to receive av spanner wrench, or by providing apertures in the screw to receive an implement, as is well-known in the arts. The socket member 31 is provided on its upper face with a seat32 which receives an angularlyextending pin or projection 33 carried at the free end of a locking lever 34 which at its inner end is fixedly attached to the bracket 26. .The locking lever 34 constitutes a handle for breaking the toggle joint to permit of the end members of the mold being moved outwardly, and when the pin 33 is engaged in the seat 32, said lever 34- holds the toggle lock in locked position.

As in Patent .jji951,723, I employ cen tral core section 35 carried by a rack 36 held against lateral movement during its operation by a brace guide 37. Said "central core section is operated by means 'of a toothed segment-38 engaging the rack 36, as in Patent #951,723 referred to, said segment being mounted on a shaft 39 carried in hangers 40 attached to the opposite side rails of the bed or base. The shaft 39 is operated to move the segment by an operat-j ing lever 41 mounted 'on one end of said shaft 39. At each end of the machine frame, I'provide, on each side thereof, and underneath the bed or" base, supporting brackets 4201f somewhat angular shapeyone end of each bracket being attached to the side rails of the bed or base, and the otherend of each bracket being attached. to the supporting legs 11. These brackets constitute bearings, for cross-shafts 43, 43 at one end of the machine and similar shafts '44,

44 at the other end of the machine. Said crossshafts extend beyond the brackets or bearings 42 at opposite sides of the machine, and at one end of the machine, on'both sides thereof, there-is'attached to the respectiveends of the shaft 43 the lower ends of levers 45, the upper ends of which are pivotal'ly attachedto the outer ends of links 46, having their inner ends pivotally attached to the rock shaft 25 at the end of the machine. At the same end of the machine, on both sides thereof,.there is attached to the ends of cross-shaft 43, the lower ends of levers" ends mounted on the the upper ends of links 52, (Fig. 5,). which however, mounted intermediate their ends on.

the ends of cross-shaft 44, so as to provide arms 48 depending below the cross-shaft 44. The lower ends of these arms 48 are pivoted as at 50 to the lower ends of links 51 which have their other ends pivotally attached to are mounted on the shaft 39. Pivotally con nected to these links52 are the inneror lower ends of levers 53, the outer or upper ends of which are pivotally connected as at 54 to the levers 47 intermediate the ends of the latter. The upper portions of the levers 48 are mounted on the ends of the rock shaft carried by the end member 15 at one end of the machine in the same manner as the upper ends of levers 47 are mounted on the rock shaft 25 carried by the end member 15 at the opposite end of said machine. a

In Fig. 1 the tamper 55 is illustrated in position over the mold for tamping the material therein, but as the tamping mechanism per 86 is a separate invention from that herein shown and described, it has not been illustrated in detail. In said Fig. 1, the ma chine is shown with the mold closed, ready to receive the material from which the block is to be molded. When the block has been molded and set, and it is desired to remove the same, the operator throws lever 41 to the left as illustrated in Fig. 2, which operates shaft 39, causing segment 38 to move rack 36 downwardly carryingthe central core 35 therewith. Through-the connectionot the

links

51, 52 and levers 53, with the

levers

47 and 48,at apposite ends of the machine, the toggle look, when locking levers 34 are re leased, will assume the Fig. 2 of the drawings, moving the end members of the mold toward opposite ends of the bed or base, and allowing the side members 14 to open outwardly, so that the block;

In case it is desired to increase the size of the.

may be removed from the bed or base.

mold, a larger sized pallet plate is substituted, the side members 14 are adjusted outwardly on the stub shafts 20, the holding clips 22 are adjusted to contormto the increased width between the side members, and a block of greater size thereby formed without other alteration or adjustment of the machine.

The toggle lock mechanism holding the end position shown in members of the mold secure in. their position, obviates. any necessity for providing any locking means for the operating lever 41, necessitating only the operation of the locking levers 34,when it is desired to operate the lever 41 to open the mold.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a concrete-block forming machine, the combination with a mold comprising side andend members, of positively-oper ating means for movingsaid end members toward or away from the side members to open or close the mold, and means for connecting said end members with their support andholding said members in closed engagement with the ends of the sidemembers, comprising anangular bracket having a deing of threaded bores, one of sald members being pivotally-secured to said support, and the other to the machine frame and a right and left screw connecting said threaded mem bers, and a lever secured at one end to said bracket and provided at its free end with a projection to engage one of the threaded members of the take-up.

2. In a concrete-block forming machine. the combination with a mold comprising side and end members, positively-operating means for operating the end members toward or away from the side members to open or close the mold, and means connecting said end members with their support, and holding said members in closed engagement with the ends of the side members, comprising an angular bracket having a de pending. lug, and a take-up device having necting said parts adjustably, and a lever secured at one end to said bracket, its opposite end having an angularly-projecting pin;

to engage the adjacent take-up member.

In testimony whereof I afiix my signature in presence of two witnesses.

ELLING ELLINGSON. Witnesses;

A. B. CARLSON, A. N. BRAGSTAD.

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

Washington, D. G.