US853069A - Machine for making fence-posts. - Google Patents

Description

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- PATENTED MAY 7, 1907.

R, L DENNISON. MACHINE FOR MAKING FENCE POSTS.

-APPLIUATION FILED JULY 19. 1906.

lNVENTOR Ros EIRT L'.DENNl-SON Ar'romvms Np. 853,069. PAI'BNTEI),.MAY 7, 1907.

- V B. L. D'ENNIS'ON.

MACHINE FOR MAKING 'FENGE' POSTS. APPLICATION FILED JULY19, 1906.

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INVENTOH R BERT L.DENN|SON PATENTED MAY 7, 1907.

APPLIOATION nun) mm 19. 1906.

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showing the connection UNITED STAgiigygENT. orr ong .ROBERT LEE DENNISON, or KANsAscrrY, MISSOURI.

MACHINE FOR To all whom it may concern:

Be it known that 1, ROBERT LEE DEN/YI- SON, a citizen of the United States, and a resident of Kansas City, in the county of J ackson and State, of Missouri, have invented certain new and useful 1m rovements lL' Machines i'or Making Fenceosts, of which thev and combinations of parts as will be hereinafter described and claimed.

in the drawings Figure 1 is a side elevation partly in section'of the machine, in the direction-of the arrow No. 1 ofFig. 2. 2 is a top plan view of the machine. tail vertical section on about line 33 of Fig. 2. I 4 is a sectional elevation, partly broken away of the machine, drawn through one of the mold boxes and alongside the packer. Fig. 5 is a detail vertical section on about line 5-5 of Fig; 2. Fig. 6 is an end elevation of the mold box sections with the filling plates, used in boring the same, in place. Fig. 7 is a detail vertical section the former and its reciprocating piston rod. Fig. 8 is anend view Fig. 9 an inner face view, and Fig. 10a side view of one of the pans for use in handling the green posts. Fig. 11 is a side elevation, partly in section of a machine embodying the invention, taken in the direction of the arrow No, 11, in Fig. 2

I Fig. 12 illustrates the rack stem of the'packer ingress-section, flfig. 1:3 is a side view of a 'part'gthereof, and iflg. 14 1s a detail view artly. in section showing the cylinder and its piston revolving the carrier step by ste; i

.the present machine are embodied inany ofthefeatures of the machine illustrated in my former application for atent above referred toand it involves in a ,dition certain irn rovementsas will be more fully described ereinafter. Thus in-the present 'I employ in connection. with the main frame, substantially like. that'shown in niyformcr application for-patent, a'carrier A to which the mold boxes, B are secured, and which carrier revolves around acentral main shaft a, which is hollow, angl forms a Fig. 3 is a de between the head of Specification of Letters Patent; Application filed July 19, 1906. Serial No. 326,906.

MAKING FENCE-Peers,

Patented May 7, 1907.

P a connected with the former T and recipro-- cated therewith in' the operation of the invention.

The pump 0, having a check valve at", with a suitable source of supply of oil, which is drawn into cylinder in connection with a plunger cylinder is connected by a pip e the cylinder. a, in the operation of the machine. The plunger a is provided with a check valve a and is connected bya pipe connection-a with a channel formed in the. i wlth which the former T is conand the former T I piston rod V nected for reciprocation, being made hollow as shown at a, and having numerous perforations a, through which the oil supplied may be discharged to the post in the operation oi molding the same; This former T is reciprocated bynieans substantially the same as those describedin my former application forpatent, and including the cylinder V, see Fig. 11, and the former has its head T swivel'ed on the lower end of the piston rod V means providedfor such purpose, in the o eration of the invention, without turning t 0 piston rod V, by wh'ch t'he'i'ormer T. is reciprocated in Thus, as the former reciproeat ea tlle plunger 0,, operating in the pump cylinder .al draws the follower T, from whence it discharges to 1:}:

so it may be turned by the the operation of the machine.

. is oil into the said cylinder (Land forces it to t e.

concrete within the mold box, as will be derstood from Fig. v11 fot the drawings.

In effecting the joint between the piston rod V and the head of the plunger T,- the lower end of the rod V is provided with a flange V within the head of the former. T and bears upon rollers 'T, rollers '1 operating above the flange V and a shoulder V being provided above the rollers T to receive aboaring plateVW, above which'ga'skets V arealrangedto be pressed upon by the gland T" so pressure may beexerted upon the gaskets which fits ina contracted bore T" to preserve an oil tight joint without prorollers,

In forming and G it is preferred to bore the same in ducing undue pressure upon the antifriction the mold box with sections G [05 Y.

such manner that the mold box sections are segments of the circles on which the bores of the mold box are struck mold box, I prefer to'place iron strips g be.- tween the flanged edges of the sections and then turn the interior out-with a boring bar "lhu's, referring to Fig..6, in boring the sections G and G of the- IIO . ally to the more fully described.

perfectly round, and after such boring, the strips 9 are removed and it will be noticed then that the bore of the mold boxes will be slightly out of a true circle, the effect of which is to prevent the material being formed into a post from turning within the mold box when the pressure of the former T is operating within the material lormingthe post. This feature of holding the material rom turning n1 connection with the luhricat ing plunger makes it possible to produce a practically ')erfect post, which cannot be effected otherwise as the plunger when lubricated will stick to the material in the mold box and cause it to turrrwithin the box, when the latter .is round, which has the effect of tearing the post and injuring its inner surface, and seriously impairs the solidity and efficiency of the post.

In Figs. 8, 9 and 10, I illustrate a pan for use in removing the green posts from the mold boxes. This pan (l conforms genershape of the post, is open at one side so it can be readily slipped onto one side of the post within the mold box, has a bottoln plate G to slip under. the green post, and is provided on its outer side with handles G .so it can be conveniently manipulated in removing the green post from the mold box and placing itin position to dry.

I also employ in the present machine, a packer O for feeding the material into and packing it within the mold boxes preparatory to the operation of the former T. This packer 0 IS in the form of a spiral and is preferably of such length as to extend the entire length of the mold box to insure the pcrlcc-t packing of the material in the mold. Atits upper end the packer O is provided with a disk 0 and above said disk with a rackshait 0 having circular rack teeth extending around it and provided along the-said rack teeth with a key way 0 by which the key in the pinion O operates to turn the rack shaft 0 and at the same time permits the movement longitudinally of the said rack shaft through the pinion 0', assaid shaft ascends and descends in the operation of the machine. The disk 0' servcs'a's an abutment for operating various lovers, provided for different pulpose's as will be hereinafter The pinion 0 for revolving the packer O is turned by a pinion I) on the shaft of a motor I, which motor P lower, thus releasing the friction permitting the same to be forced by the 9.0- 12 5 the controller 0 as shown in Fig. 2' of the drawings. l

The brake wheel 0 receives the band brake 0 connected with the lever 0 having 7 5 a hanger 0 arranged to be opera-ted upon by the disk 0 as the latter reaches its uppermost position. By this means it will be noticed that the disk 0 as it approaches its up permost position 0 crates the motor through the hanger Fiend also operates to. set the brake 0" through the hanger O". The motor 0 hasa continuous operation which may be regulated by the controller 0 and gear 0, which gear is loose upon the shaft 0 so that the shaft 0 is turned by the ear 0* when means are provided for clutc 'ng the gear 0 to the shaft 0 This is the purose of the friction disk 0 by the spring 0? toward the gear 0 and is operated by the yoke 0 away from the said gear, the said yoke 0 being keyed on the shaft O and said shaft being operated in a manner which will This shaft 0 is provided with a depending crank arm 0 connected with the forwardly projecting link 0 adapted to release the atch 0' of the depending barO whereby to release the brake 0 after the diskG has IOC descended from the position shown in Fig. 3 of the drawings. The shaft 0 is also provided with a laterally projecting crank arm 0 to which is connected the hanger rod 0,

which extends down to the revolving carrier x05 and is provided at its lower end with a pivotedfoot-piece V having a roller V which is I operated upon by tripping projections V on the revolvmg portlon of the carrier as best shown in Fig. 4 of the drawings. The bar no 0 is guided at its lower end in a bracket I mounted on the framing of the machine, and this bracket also forms a pivot for a bell crank lever P one arm of which extends into the path of the disk 0 thereby as it is being lowered, and the other arm of said bell crank lever P is connected by the links P with the pivoted foot-piece V so it may operate the said footpiece in opposition to the spring I and ull the said 1 2 foot-piece, V from theposition s own in Fig. 4 to the right where it will drop from the cam projection V and permit the rod O f to disk 0" and tion of its spring 8 as well as by the gravit of rod 0 into frictional engagement Wit the gear 0, so the friction disk ()and the shaft 0 will be operated from the disk 0'' in order to lift the packer by the gearing of the 130 the shaft of a hio- 7o tor 0", which motor may be regulated by gives a continuous motion to the which is pressed o presently be described. 5

for engagement '1 I 5 pinion O with,the raclc O, as before de-- scribed, it being understoodthat. the pinion O is sufiiciently wide to revent any interferenoe with the mesh the parts" by the passing of the he -way in the rack 0 as the said rack is revo ved in the operation of the machine. Y I

On the opposite side of the pivoted footiece V from the spring P, I provide a cam oop or rejection V Incase'the material should all into the mold box to such an extent'as to prevent the packer 0 from dropping down low enough to brin the disk '0 into operative contact with the ever P? so as to release the arm V from its position on the lug or projection V the motor would not be set to lift any part of the weight of the packer, and to overcome this objection I provide on the cross-head t of-the'lforme'r T a roller- Vfl'which on the downward movement of the former will enga e with the cam loop or projection V and orce the arm V off the cam projection V in the same manner as if such operation had been effected by the engagement of the disk 0 with the lever P thereby insuring perfect uniformity of the entire movements of the machine.

When irom any reason a variation in the density of the packed material becomes necessary or desirable, it may be controlled by the motor .0? by the moving of the'lever O irompoint to point to increase or diminish the power of the motor, as is well known by those skilled in such art. .It is to be un- 4o of the material in the mold box. to force the derstood that the motor will by its connections with the gear wheel 0- onthe shaft 0 and the pinion O on' said-shaft, lift any part of the weight 'of the packer (l, and as the weight of the packer is litted in whole or in part by the motor, it will. require less density material-out of the mold box so that it is ossible to vary at the will of the operator,

the amount of material formed into a post.

In the operation of the improved machine when the carrier A has revolved to bring the mold box Bvdirectly under the packer 0, one' of the hgs"or prmectwns on the carrier will be brought lo a position beneath the pivoted foot-piece of the r'odO and the said rod by its connections with the shaft for opersiting the ll'H'l'lUll disk w ll move said ric w tion disk out of engagement with the gear wheel 0" and the devices ()"nud 0" operated i'roiu the shaft 0" will-compress the latch 0 permitting the bell cran ol" the brake band to drop, this releasing the shaft O so that the pee the mold boxB.

. rodi) will be lowered and the motor l will may drop to the bottom of operated the lever P, the" footpicce of the start to revolve the meker (t) through the pinions and O in such manner as lo pack the material to be molded into the mold.

ox.' As the material in the mold hoxis As soon as the disk O has packed to the desired density, the packer 0 through the action of its spiral blades will climb upwardiy within and be ont of the mold box when the disk 0 will by contact with the arm set the hand brake, and the latch O engaging the frame Q will hold the packer suspended until the carrier A moves another empty nold box under the packer when the contact will. again be made with the )rojection V and the toot-piece on the rod when the operation will. be re peated as before.

, The means for revolving the carrier may be substantially the same as shown in my former application, before referred to. have, however, illustrated in Fig. 14 a con s'truction of cylinder S with an improved valve S, which may be preferred in some instances.'

Having thus described my invention, what I claim as new and-desire to secure byLetter's Patent is- 1. In a machine for molding plastic articles, the combinationof a revoluble carrier having mold boxes, a hollow shaft centrally of said carrier and formin a pump cylinder, a'supplyipe, a check valve controlling the 'same, a

valve, a" hollow former aving discharge openings, and a connection between the hollow former and the hollow plunger,-subst-antially a's set forth.

2. In a machine for molding lastic arti cles, the combination of a molan hollow former reciprocatin and revolving in said mold, and having oi discharge openings, and means for supplying oil to said former.

3. The co n ination in a machine for moldhaving a former, an 4 material to the former.

cplunger reciprocating with the ing plastic articlesp'of a central hollow shattformin a pump cylinder, a carrier revolving a hollow plunger reciprocatingiirthe pump cylinder, a former, a tube connecting the former with the plunger, and means for turning andreciprocating the former.

ing said ollow plunger with t o iston, rod whereby oil maybe conveyed tot econduit of the piston rod and the plunger will be rociprocated by the movements of the'piston rod, substantially as set forth.

means for conveying the pumpabout t esaitl shaft and having mold boxes 5. The combination in a machine fornzolding plastic articles, of a piston rod hav ng an li'nder, a hollow plunger operatli fi in. said or linder, and a supply 'ipe connect-.

ollow plunger iston and checktoo ing lastic articles, of a mold box, a former revo ving and reciprocating therein, a pump-- 4 Thecombination in a machine for mold-4 an oil conduit and a supply pipe leading thereto, a hollow former swiveled on the piston rod and having oil discharge openings,

the said former communicating with the oil conduit in the piston rod, and a stulling-box controlling the joint between the former and the piston rod. 1 A

7. The combination in a machine substantially as'described of a revolving carrier having mold boxes arranged to be successively presented to a. packer, a packer arranged to reciprocate and revolve in said mold boxes, and provided with an upwardly projecting rack shaft having a key-way and at the base of said rack shaft with a tripping disk, a motor and gearing connecting thesame with the rack shaft, including a pinion keyed on the said shaft, and means controlling said motor including devices depending in positionfor engagement by the disk at the base of the rack shaft, substantially as set forth.

8. The combination of a revolving carrier having mold boxes and provided with cam projections or lugs, a packer adapted to operate in the mold boxes and having an upwardly projecting rack shaft, a motor mechanism for turning the said shaft, a shaft having a pinion meshing with the rack shaft and also provided with a loose gear, a motor driving said lobse gear, clutch mechanism between said loose gear and its supporting shaft, a depending rod arranged for operation by the lugs or cam pro ections (in the carrier, intermediate mechanism between said depending rod and the clutch mechanism Whereby the said rod may operate the clutch mechanism, and intermediate devices -between the packer and the said depending rod whereby the same may be freed from'engagement with the cam lugs or projections of the carrier, substantially as set forth. I

9. The combination with a revolving carrier, its mold boxes and cam lugs or projections, of a packer arranged to revolve and reciprocate in the mold boxes and provided with an upwardly projecting rack shaft, means for turning the shaft, a pinion meshing with the rack shaft whereby to lift the packer, a motor mechanism, intermediate devices between the motor mechanism and said pinion and including a clutch mechanism, and means whereby the clutch mcchanism may be operated from the cam lugs or projections of the carrier, substantially as set forth.

10. "In a machine for molding plastic articles, the combination with a revolving carrierl. having mold boxes, of a packer arranged to descend by gravity into said mold l)oXes,'

' devicesfor lifting said packer, and means --.dontrolling'said lifting devices from the carrier, substantially as forth.

11. The combination with a revolvin carrier having mold boxes and also provide with cam lugs or projections, of a acker adapted to reciprocate and. rotate wit in the said boxes, means for turning the said shaft, devices for raising the shaft and including a motor mechanism and a clutch, a de endin rod, intermediate devices between t lie sai rod and the clutch mechanism, the said rod being provided at its lower end with a pivoted foot-piece arranged to o erate upon the cam lugs or projections of t e carrier, and means for operating said foot-piece from the packer, substantially as set forth.

12. The combination with a revolving carrier having cam lugs or PI'OjCGiJluHS and a packer having a disk, and mechanism for lifting the packer, of a depending rod arranged to operate upon the mechanism for liftin the packer, and provided at .its lower em. with a pivoted foot-piece operating upon the cam lugs or projections of the carrier, a bell crank lever connected with the footpiece and arranged for operation by the disk of the packer, and a spring for readjusting the foot-piece, substantially as set forth.

13. The combination of the carrier having the mold boxes and the cam lugs or projections, a packer, devices ,for lifting the packer, means for controlling the lifting devlces including a depending rod having a pivoted foot-piece arranged for engagement by the cam lugs or projections, devices for operating said pivoted foot-piece from the packer, a reciprocating former, and devices in connection with said former for operating upon the pivoted foot-piece whereby to actuate the same under unusual circumstances, substantially as set forth.

14. The combination with a revolving carrier having mold boxes, of a packer adapted to reciprocate and revolve within the mold boxes and provided with an upwardly projecting rackshaft, means for rotating the rack shaft and packer, a shaft having fixed VIXO thereon a pinion meshing with the rank shaft, a gear loose on said shaft, means for driving said gear, a brake device having a disk fixed on the shaft, means for setting said brake from the packer, a, clutch mechanism 11;; whereby to connect the geanwith the shaft, and means for operating the clutch device from the carrier, substantially as set'forth.

' 15. The combination of the carrier having mold boxes and cam lugs or projections, a is cip rocating packerhaving a rack shaft, means for revolving the packer, a shaft having a shapes 'releasingtlie friction disk from the gear and mcludin a dependingrod arranged foropera tion by t e cam lugs or-projections of the carrier, and means for releasing the brake when the friction disk is freed from engagement with the loose gear, substantially as set forth.

16. The combination of a revolving gear having mold boxes, a packer reciprocating in said mold boxes and having an upwardly projecting rack, a shaft havln on sai shaft, brake mechanism operatin upon the shaft and having a depending-r0 arranged to be tripped from the packer and mom set, a friction disk keyed on the shaftand arranged to eng'a e with the driven gear where? by to key the atter to the shaft, means for operating said disk and including a depending rod arranged for operation from the carrier, and a device connected with the disk op.-

erating means for releasing the latch of the V a brake mechanism, substantlally as set forth,

17. The combination with a revolving carrier and its mold boxes, of apacker for ope'rating in said mold boxes and having a rack shaft, a shaft having a tight pinion meshing with said rack shaft, a driven'gear loose on said-shaft, a brake disk keyed on-the shaft, a

friction disk keyed 0n the shaft and moving into and out of, engagement with the driven gear, a brake band, means operating upon the brake band for setting the brake and including a depending rod for operation from the packer and a latch for holding the brake set, a shaft 'approximately at right-angles to the first said shaft and provided with a yoke for operating the friction disk, with a braking I crank having means for releasing the latch of the brake mechanism, andwith a second crank, and a depending rod connected with said second crank and provided at its lower end with means for operation from the revolving carrier, substantially as set forth,

18. The combination with a revolving carrier having mold boxes and cam lugs or projections, of a packer having a downwardly projecting rack shaft and a disk at the base thereof, means operating upon the rack shaft to revolve the packer, a pinion meshing with t v a tight pinion, meshin with said rack, a riven gear loose ed with a latch for holding the brakethe'raek shaft for lifting the packer, means 'for driving-til said inion, a clutch mechanism for detac 'ng t e pinion from its drive mechanism, means operated from the packer when in its lowermost position for connectin the pinion with its drive mechanism, an meansoperating from the carrier for connecting the pinion with its drive mechanism, substantially as set forth.

' 19. The combination in a 'machine for molding plastic articles witha revolving carrier having mold boxes and cam lugs or projections, of a reciprocating paeker,mechanism for raising the said packer, the latter being adapted to descend by gravity, means for driving said raising mechanism, a dependin rod,intermediate devices whereby the'sai rod may connect the driving means with the raising mechanism, means operated from the carrier-for actuating the rod to connect the driving means with the raising mechanism, the said rod being arranged for operation by thecam lugs or projections of the carrier to release the driving means from the raising mechanism, substantially as set forth.

20. The'combination with a revolving carrier, its mold boxes 'and'its lugs or projec tions, of a reciprocating packer operating in the moldboxes andprovided with a rack shaft and at the base thereof with a projecting disk, gearing for revolvin thepacker, a

pinion meshing with the rack s aft for raising the disk of the packer, substantially as -set forth.

ROBERT LEE DENNISON.

Witnesses:

Eunice -DOLAN,

R. W. SEAMAN.

ear in connection with the pinion,

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