US1142522A - Machine for manufacturing concrete articles. - Google Patents

Description

P. B. JAGGER.

MACHINE FOR MANUFACTURING CONCRETE ARTICLES.

APPLICATION FILED SEPT. 13, 1907.

1,142,522. Patented June 8, 1915. 5 SHEETS-SHEET 1.

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P.B.JAGG ER. MACHINE FOR MANUFACTURING CONCRETE ARTICLES.

APPLICATION FILED SEPT-1331902. I r 1,142,522. PatentedJune 8,1915.

5 SHEETS-SHEET- 2.

THE NORRIS PETERS CON PHOTD-LITHO., WASHINGTON, D C.

P. B. JAGGER.

MACHINE FOR MANUFACTURING CONCRETE ARTICLES. APPLICATION FILED SEPT-13,1907.

1,142,522. Patented June 8,1915.

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P. B. JAGGER.

MACHINE FOR MANUFACTURING CONCRETE ARTlCLES.

APPLICATION FILED SEPT. 13, 1907- Patented June 8, 1915 5 SHEETSSHEET 4- :Lll

THE NORRIS PETERS c0. PHOTG-LITHll, WASHINGTON, D4 04 P. B. JAGGER. MACHINE FOR MANUFACTURING CONCRETE ARTICLES.

APPLICATION FILED SEPT. 13, 1907.

Patented June 8, 1915 5 SHEETS-SHEET 5-v :FZo

W T/VISSZS THE NORRIS PETERS co, PHOTC-LITHO., WASHINGTON. D. C.

PETER BURD JAGGEB, OF LONDON, ENGLAND, ASSIGNOR TO THE IMPROVED CONST'RUC- TION COMPANY LIMITED, OF LONDON, ENGLAND. Y

MACHINE FOR MANUFACTURING CONCRETE ARTICLES.

Specification of Letters Patent. V Patented J 11116 8, 1915. Original application filed February 20, 1907, Serial No. 358,418. Divided and this application filed September 13, 1907. serial No. 392,742.

To all whom it may concern Be it known that 1, PETER BURD JAGGER, a subject of His Majesty the King of Great Britain, residing at 47 VVa-rwick road, Maida Vale, London, in England, have invented certain new and useful Improvements in Machines for Manufacturing Concrete Slabs, Beams, Pipes, Tiles, and other Concrete Articles, of which the following is a specification.

This invention relates to a new or improved machine for manufacturing concrete slabs, beams, pipes, tiles and other concrete articles which may either be reinforced or unreinforced as desired.

In the ramming, pressing or jiggling processes for the manufacture of concrete slabs, etc., hitherto commercially used or proposed, the great difficulties presented are the elimination of all air voids and excess moisture, and the obtaining of perfect density and solidification with even distribution of the material Moreover for economical construction the greater the displacement of the mortar body by the use of the larger aggregates the better, but there is limitation to this in the manufacture of concrete by hydraulic or other pressure machinery or by hand ramming, as it is impossible to compress with any economy unless the aggregates are of a smalluniform size.

With the machine according to my invention not only can all sizes of aggregates required for economy be used, but a steady settling solidification of the material with even distribution of the aggregates is effected over all the surface of the table simultaneously, and all. air voidsand excess moisture are eliminated, and perfect density and solidification obtained, the-result being an article of great strength and durability.

With a machine according to my invention the plastic concrete (placed in molds suitable for articles to be produced) is supported upon a table capable of rocking about a horizontal axis and also of simultaneously moving substantially horizontally in a direction which traverses the plane of.

the rocking motion, means being provided whereby a series of vertical blows are given to the supporting table preferably at the ends thereof. In other words, with a machine according to my invention, the directions of the horizontal motions or blows lie in different vertical planes, as contradistinguished from cases where the directions of the horizontal motions or blows lie in the same plane.

I will describe with the aid of the accom panying drawings a construction of the machine which I have found towork Well.

Of the drawings, Figures 1, 1 Sheet 1 is a part side and part sectional elevation of the machine; Fig.2 is an end view thereof; Fig. 3 Sheet 3, 3 is a plan view of the machine with some of the mold boxes removed for disclosing the elevating tables, some of the latter being also'removed for disclosing the guides therefor; Fig. 4 is a transverse section of the machine; Fig. 5, Sheet 5, is a front view of an elastic eccentric rod head which I prefer to employ; Figs. 6 and 7 being sectional views of such elastic head taken respectively upon the lines X X and Y Y Fig. 5; Figs. 8 and 9 are respectively front and side elevations of one of a pair of forked levers hereinafter referred to, while Fig. 10 is a detail View also to be hereinafter referred to. I

Referringto Figs. l-et, a designates a supporting frame preferably composed of a number of uprights and cross members. Between channel irons Z) 0 fixed to the central uprights and running transverse of the frame are fulcrumed at their lower ends a pair of levers (Z c, which as shown in Figs. 8 and 9 are forked at their upper ends The ends 7 areprovided with caps g and are bored to receive trunnions on blocks 16 which are bored to receive and support a shaft j. Upon the shaft 7' is centrally supported. a mold, table or platform Z by means of bearings h. secured to the depending sides 70 of the platform, table or mold. The levers (Z c are so located thatthe blocks 16 may bear on their outer faces against'the bearings 72,, and collars 71. are provided on the shaft y as bearings for the inner faces of the trunnion blocks 16. Thus by rocking one or both of the levers d, 'e,,through a small arc, the table Z is subjected to a substantially horizontal reciprocating motion while the table may be rocked aboutthe shaft j, that In order to provide means for rocking the levers (Z 6 and rocking the table Z about the shaft j lengthwise and preferably centrally of the frame a is ournaled a shaft m su tably arranged to be driven from any available source of power. Upon the shaft are fixed at i The each end thereof eccentrics n and 0. eccentric n is connected to one of the forked levers (e) and the eccentric 0 is connected to one end of the table Z for the purpose when the shaft m is rotated of simultaneously imparting a lateral reciprocating movement and a rocking motion to the table Z.

The connection of either or both of the eccentrics n and 0 to the lever (e) and the table Z may and preferably is arranged an elastic one. As shown in Figs. 5, 6 and 7 and more particularly for the connection of the eccentric 0 to one end of the table Z, 1 provide the eccentric rod 29 with a slotted head 9, and in sliding engagement with such head is arranged a bush 7* to which the table may be suitably attached. This bush 1 is normally held in position by springs s s, which at their one or inner ends bear against the bush and at their other or outer ends bear against plates t t also arranged in sliding engagement with the head 9, so that by means of inclined cotter pins or wedges u a they may be adjusted in position for varying the force of the springs s 8, holes 41 1) being formed in the wedges a u and the plates t t forreceiving pins or the like for retaining the wedges when driven to the required position.

For the elastic connection of the eccentric n with the lever e, I have found it convenient as shown in Fi 4 to pass the head of the eccentric rod a: through the lever and interpose springs y y between the latter and adjusting screw nuts 2 2, although if desired the form of elastic head described with reference to Figs. 5-7 may in this case also be adopted. The lever 6 may also be connected to the same eccentric as the lever e or it may be connected to an independent eccentric.

At each end of the supporting frame as shown at the right hand side of Fig. l are arranged a number of preferably wooden concussion blocks 1*, upon which the table strikes as it is rocked, i. 6., a vertical blow is given to each end of the table alternately. For preventing any straining action upon the horizontal rod 00, I prefer to set the eccentrics n and 0 upon the shaft m so that the eccentric n will be crossing point of no travel when the table strikes against the blocks 1*.

In addition to the Vertical blows, side blows may also be imparted to the table To effect this the table may be arranged to strike laterally against adjustable spring controlled rods or bolts 1 carried by the supporting frame substantially as shown in Fig. 10.

To avoid any swiveling action of the table this may be provided, as shown in Fig. 1, with a number of guide plates or the like 2 working in guides 3 fixed to the supporting frame.

In operation, the molds suitable for the articles to be produced having been positioned upon the table Z and filled with the plastic concrete material, rotary motion is imparted to the shaft 912.. This by means of the eccentrics n and 0 imparts an oscillatory movement both to the lever e or levers (Z a and the table Z about their turning points. The table Z is thereby simultaneously laterally reciprocated and rocked lengthwise of the machine, and a vertical blow is given alternately at each end of the table by the alternate contact of said ends against the blocks 1 The shock thus imparted at each end of the table gives the desired vibration through the machine, and in conjunction with the rocking and lateral reciprocating motion, and may be side blows also, keeps the longitudinal movement of the material steady.v

By a machine constructed substantially as hereinbefore described I am able to effect a steady settling solidification of the material over all the surface of the table, and not only are all air voids and excess moisture eliminated and Stratification obviated, but by the automatic adjustment of every par ticle of the material in its precise position, a maximum density of the material through out is produced, without any pressure What soever, while moreover a great saving is attained in the time required for the articles to thoroughly set ready for use.

It may here be observed that the provision of the elastic head to the eccentric rod or rods prevents .or considerably reduces any straining action upon the driving gear and allows the table to overrun and thus throw as much vibration to the center of the table as there is at the ends thereof.

As shown in the example of the machine illustrated elevating gear may be provided beneath the supporting frame for lifting the concrete articles (where the shape of these permit) out of the mold boxes. A suitable arrangement of such gear consists of plates 4 carried by rods 5 which work in brackets 6 connected to the frame a. The

rods 5 are each provided with a rack 7 which is adapted to be operated by a pinion 8 fixed upon a spindle 9 and adapted to be rotated by a handle 10 (Fig. 2). The plates have a number of upwardly extending fingers 11 adapted when the rods 5 are raised to pass through the bottom of the table Z and the mold boxes 12 (in this case provided with removable plates 13 as false bottoms), and raise the plates 13 as shown in Figs. 1 and 2, so that for example a travelmg trolley can be run over the table to pick up the plates with the formed articles thereon, locking means such as ratchet wheels 14: and pawls 15 being provided to keep the rods 5 stationary as long as required.

As a modification, the table may be arrangedat the ground level, so that a trolley or traveling support carrying the mold box or boxes may be run thereon, and such trolley or the like may be held on the table so that it has no movement independent of the latter, or it may be allowed a certain freedom to move backward and forward upon the table as this is operated as hereinbefore described.

I Wish it understood I define the term concrete articles as those in which separate particles are formed into a mass or solid body.

Having thus described my invention, what I claim and desire to secure by patent is 1. A machine for purposes such as herein referred to, comprising a table, a horizontal pivot therefor, means for oscillating the table about such pivot, means for simulta- V neously reciprocating the table in the direction of the axis of such pivot, and means for arresting the oscillations of the table abruptly independently of themeans producing the oscillations aforesaid. V

2. A machine for purposes such as herein referred to, comprising a table, a horizontal pivot therefor, means for oscillating the table about such pivot, means for simultaneously reciprocating the table in the direction of the axis of such pivot, and means for arresting the reciprocations of the table in the direction of the axis of the oscillating pivot abruptly independently of the means producing the reciprocations aforesaid.

3. A machine for manufacturing concrete slabs, beams, pipes, tiles and other concrete articles, comprising a table, a supporting frame, forked levers pivoted to the supporting frame, trunnion blocks carried by such forked levers, a pivot shaft carried by the.

trunnion blocks and means attaching the table to the pivot shaft, the pivots of the forked levers being arranged to'permit of movement of the levers in the plane containing the axis of the table pivot shaft aforesaid, a driving shaft, eccentric means driven by such shaft and adapted to impart movement to the forked levers so as to reciprocate the pivot shaft in the direction of its axis and other eccentric means connected to the table and adapted to oscillate the same about the axis of the pivot shaft when the latter is being reciprocated.

4-. A machine for manufacturing concrete slabs, beams, pipes and other concrete articles, comprising a supporting table, a horizontal pivot therefor located intermediate of the ends of said table whereby said table 'may be oscillated about a horizontal axis,

a rotary member, an eccentric member mounted on the rotary member and combined with said table for so oscillating'the latter about the said'axis, a second eccentric member mounted on the said rotary member and combined with said table for simultaneously imparting to the latter a substantially horizontal reciprocating move- PETER onn JAGGER.

Witnesses:

HENRY CONRAD HEIDE, ALBERT GEORGE BARNES.

Copies of this patent may be obtained for five cents each, by. addressing the Commissioner of Patents, Washington, I). G.

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