US1500467A - Lacquering machine - Google Patents

Description

7 6 4, 0 .5, l D NY O P H. w.

July 8 1924.

LAGQUERING MACHINE July 8 W. H. POND LACQUERING MACHINE Filed Sept. '7, 1922 3 Sheets-Sheet 2 Patented July S, 1924i.

`WILLIAM H. POND, F PROVIDENCE, RHODE ISLAND, ASSIGNOR TO THEODORE W. FOSTER & BRO. C0., OF PROVIDENCE, RHODE ISLANB, A CORPORATION OF MAINE.

LACQUERING MACHINE.

Application filed September 7;'1922. Serial No. 586,692.

To all whom t may concern:

Be it known that LIVILLIAM H. POND,

a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Lacquering Machines, of which the following is a specification.A I

This invention relates to improvements in machines for applying a coating of lacquer or other liquid covering to work, and the object of this invention is to provide a car rierfor the work adapted to immerse the work in a bath of liquid lacquer or other liquid covering, means also'being provided for lifting the work from the bath at a very slow speed, the lifting mechanism being automatically arrested in its action when the work has been removed' from' the bath.

A further object of this invention is to construct a machine'ofthis character with a plurality of units eachadapted to be in dependently operated to immerse the work and when the work has been lifted from the bath to automatically stop, permitting it to be removed, and fresh work to be applied to the carrier. v

With these and other objects invi'ew, the invention consists of certain novel features 30 of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a side elevation of my machine showing oneV of the bath vtanks in section and some of the others broken away to better illustratel the operating mechanism.

Figure 2 is a plan view of the machine.

Figure 3 is a sectional elevation Vonline 3 3 of Figure 4, showing the power transmitting member.

Figure Atis a side elevation of the power Y transmitting member.

Figure 5, is la plan View showing one of the units as disconnected from the others. Figure 6 is a side elevation of one of the operating units. p Y

It is found of advantage in lacquer apply- `ing 'machines to providea bath tank for carrying thelacquer and to prov-idea rack for carrfvin'gf'the work-adapted to be immersed in the tank' and to'fleXjibly connect Ya lifting device, wherebyl the work mayf be lifted ata veryslow speed, orJ a'ispeed at which lacquer is adapted to dry upon the work as it is being lifted from its bath thereby effectually preventing the lacquer from dripping from the work and so leaving bad places thereon, which wbuld be the case if 1t were quickly withdrawn from the bath and the following is a detailed description of -one construction of machine by which these results may be successfully accomplished.

VWith reference to the drawings, 10 designates theframe of the machine which may bemade of suitable material and on which the operating mechanism is mounted. I preferably form Vthemachine of a length suflicient to mount and operate a plurality of work carrying units so that each unit may be operated independently ofthe others, whereby when'one is being loaded with fresh work and the work lowered into the bath it does not affect the action of the others and a sufficient number of such units may be employed in a single machine to keep one attendant busy, the mechanism bei-ng set so that the units may be operated successively if desired.

In the construction of the machine I preferably provide a separate tank 11 for each separate unit, instead of using one elongated `tank for all ofthe units, I Ythen construct la rack or carrier 12 on which the work 13,

illustrated in dotted lines, may be mounted by any suitable means, and in order to lift this carrier with its work from the tank at a very slow speed, I have provided a drum or pulley 141-, which is mounted to rotate on a iXed shaft 15 and which drum or pulley is connected to the carrier by the fiexible band' or connector 16 which may be a chain, belt or other suitable band. Also, on this shaft l5, I have mounted a similar pulley or drum 17, which is connected to the pulley 14, and over which a flexible band 18 is passed 'with a weight 19 connected to its end, which weightvis heavy enough to counter balance the work carrier when loaded.

Inorder to drive this lifting drum or pulley at a very slow speed, Ihave provided a main ydriving'shaft 20, which may be driven from a belt, notfr shown, through the pulley 21 to transmit its'power through the pulley 22,`belt'23 and large pulley 24 to the jack shaft 25, which shaft transmits its motion through-the gear 26 to the gear 27 on the short shaft 28: which latter shaft in turn transmits motion through the gear 29 to the gear 3() on the gear shaft 31, and motion is transmitted from. this shaft through the gear 32 to the gear 33 on the main power transmitting shaft 34, whereby this latter shaft is driven at a very slow rate of speed to drive the different lifting mechanisms.

At intervals along this power transmitting shaft, I have mounted a plurality of friction driving discs 35, each being adapted to t-ransmit its power to the lifting drum or pulley of the dierent units above described, and in order to control the transmission of this power from thse discs 35 to these pulleys or drums 36, I have pivotally mounted ashaft 37 in ayoke 33, which yoke is fixed to the pin.39 to oscillate in the bearing 40, the friction roll 41 being fixed to one end of thershaft 37 to contact with the face of the disc 35, while the friction roll 42 is fixed to the opposite endof this shaft to frictionally engage the side face of the lifting pulley 14,

and in order that these friction rolls may engage their respective surfaces with the proper pressure I have fixed an arm 43 on the lower end of pin 39 and to the outer end of this arm I have attached a tension spring `44, which serves to normally press these rolls against their respective driving and driven surfaces. A

In order to arrest the lifting action of the drum or pulley 14 vwhen the work carrier has lifted his work from the bath, I have mounted a cam or protuberance 45, (see Figures 2 and 5) whereby when the pulley is rotated to a pre-determined point, this cam is moved to engage the friction roll 42, and swing the shaft 37 in its bearings to move the friction roll 41 from contact with its driving disc 35 whereby the rotation of the pulley 14 is arrested.

After the finished work has been removed from its carrier and fresh'work is positioned thereon, it is desired to drop the carrier with its work back into thebath and to accomplish this in a simple and effective way, I have connected an operating handle 46 to the end of the lever 43, whereby an endwise pull on this handle further rotatesthe friction driving member to release the roll' 42 from the cam 45thereby leaving the'pulley 14,to be rotated by handto lower the carrier with its work into the bath, the handle 46 is then released permitting the frictiondrive to again engage the side face of the pulley 14 `a'nd disc 35 toV start the lifting operation mechanism again.

In some cases order to flexibly or yieldably mount the Vpulley 14 upon its-xed shaft 15, I mount a spring 47V on this shaft to move the pulley laterallyand 'press it against the working face of the roll 42.

By my improved construction it will be Vseen that any one `of the units may be oper- .ated entirely independently ofthe .others and when each has lifted its work out of the bath, it is automatically arrested to wait for,

I desire it to be understood that I reserve.

the privilege of resorting to all'the mechanical'changes to which the'device is susceptible, the invention being dened and limited only by the terms of the appended c laims.A

Iy claim: t Y 1. In a machine of the characterv 'described, a bath tank, a workV carryingf rack adapted to be lowered into said tank, mea-ns4 for lifting the rack and its work from the bath at a predetermined speed, driving means therefor Aand cam means ,for automatically disconnecting the liftingmeans .i

from the driving means when the work has been lifted clear of the bath. 'Y i i 2. In a machine of the character described,

a bath tank, a work carrier adapted to be immersed with its work in said tank, means 1;

for lifting the carrierandA work from said bath, means for automatically arrestingthe lifting motion atV a predetermined period, and means whereby the power transmitting mechanism `may be disconnected from the lifting mechanism topermit the carrier with its fresh work to be lowered into said bath.

3. In a `machine of the character described, a bath tank, a work carrier adapted to be immersed with its work in said tank, a winding drum, a flexible connector between said drum and carrier, means for applying a lifting Vpower to said drum, and means controlled by the winding drum for automatically arresting the lifting action when the work has been lifted from the tank.

4. In Ya machine of f the characterV de'- scribed, a bath tank, a work carrier adapted tobe immersed with its workin said tank,

a winding drum, a liexible. connector between said drum and carrier, means for applying av lifting power yto said drum,` means for automatically arresting the -lifting vacfresh supply of workV with the carrier may descend by gravity into the tank.

5. In a machine of the character-de to be immersedwith its work in said tank,

a 'counter weighted winding mechanism, a `flexible connector between said carrier and mechanism, driving vmeans for"said,wind er,

means in said Winder forharresting thea'ction 0f thedriver Wben'the Werl; i? .falsl scribed, a bath tank, a work carrier adapted v iso from the tank, and means for releasing the Winder from the driver to again lower the carrier With its Work into the tank.

6. In a lacquering machine, a bath tank, a Work carrier adapted to be immersed with the Work into said tank, a lifting member connected to said carrier, a driving sha-ft, a pivotally mounted power transmitting member connecting said shaft With said lifter and means for swinging said member on its pivot to disconnect it from the lifter and from the action of the driving shaft.

7. In a lacquering machine, a bath tank, a Work carrier adapted to be immersed With the work into said tank, a lifting member connected to said carrier, a driving shaft a pivotally mounted power transmitting member connecting said shaft with said lifter and means for swinging said member on its pivot to disconnect it from the lifter and from the action of the drivingeshaft and manually operable means for further swinging said member to release said lifter to be again lowered with Work into the tank.

8. In a machine of the character described a plurality of independentlyT operable units each including a bath tank, a work carrying rack adapted to immerse its Work in said tank, means whereby each carrier With its Work may be lifted independently from its bath at a predetermined speed, and means for automatically arresting the lifting action of each carrier When it has lifted its Work from the bath.

In testimony whereof I affix my signature.

WILLIAM H. POND

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