US1457391A - Printing mechanism for registering machines - Google Patents

Description

ullll lll lllllllllll llllll ul 3 Sheets-Sheet l H. PLASSCHAERT PRINTING MECHANISM FOR REGISTERING MACHINES Filed June 1 June 5, 1923.

June 5,1923.

H. PLASSCHAERT PRINTING MECHANISM FOR REGISTERING MACHINES s Sheets-Sheet 2 Filed June 1. 1921 11% MA 7- "Wa June 5, 1923. 1,457,391

H. PLASSCHAERT PRINTING MECHANfSM FOR REGISTERING MACHINES Filed June 1, 1921 3 Sheets-Sheet 5 circle.

Patented June 5, 1923.

HECTOR PLASSCHAERT, 0F WACHTEBEKE-LEZGAND, BELGIUM.

PRINTING MECHANISM FOR REGISTERING MACHINES.

Application filed June 1,

T 0 all whom it may concern: I

Be it known that I, HECTOR PLASSCHAERT, manufacturer, of Wachtebeke-lez-Gand, Belgium, have invented new and useful Improvements in Printing Mechanism for Registering Machines, of which the following 1s a specification.

-;In the Plasschaert'system apparatus for registering the arrival of carrier pigeons which forms the object of the Belgian Patents Nos. 186,825186,896-204,138-and 213,204, one of the particular features consists in the mechanism for printing the time on the paper band, by means of a roller which presses the band against a plate.

As is well known, the use of a roller enables a very clear impression to be obtained, at high speed, by exerting on the paper band a pressure relatively very light for pressing the band against the plate.

The object of the present invention is a new mechanism for operating the roller in question.

In the Plasschaert apparatus described in the inventions cited above, the movement of the roller which produces the impression takes place under the action of a return spring acting through flexible connections on the ends of the shaft of the said roller, so as to cause a sudden movement of the latter during the printing stroke. Each end of the shaft is guided bythe groove in a support.

This groove is composed of a horizontal portion which is connected at its two ends with a portion-having the form of are of a The horizontal portion thus forms the chord of thecurved portion andserves for guidingthe roller during the printing stroke. Y i

.In order to produce an impression on the paper band, the ends of the roller shaft are first .moved in the curved portion of the guiding grooves, by the action on the ends of the roller shaftof two hooked driving arms, which are pivoted at the geometric center of the said curved portions.

When the ends of the roller shaft thus driven have traversed the curved guides and have arrived oppoiste the straight horizontal guides; they are automatically released bv the hooks and arethen brought back suddenly by a return spring but follow the horizontal portions of the guiding grooves. These horizontal'port'ions are parallel to the plane, of the plate so that the roller passes rapidly'over the paper band placed above the 1921. Serial No. 474,255.

said plate and thus produces the desired im ression.

n the new printing mechanism, the hooked driving arms used for bringing the roller into the operating position have been done away with and replaced by a geared winch mechanism with automatic release secured by the special teeth in the said gears, the supports with straight and curved guiding grooves have also been done away with and replaced by guiding supports with double straight grooves.

These changes enable the dimensions of the apparatus to be reduced both in width and to a greater amount in height.

oreover, in the former mechanism, the adjustment of the pressure exerted by the roller for printing on the paper band is effected by raising or lowering the plate together with the clock movement which drives the hands of the dials which mark the time, whereas the roller guides remain fixed.

In the new mechanism, the adjustment is made in the opposite way, that is to say, the plate and the clock movement remain fixed, while the roller shaft guides can be brought closer to or moved away from the plane of the plate.

Simply for demonstrative purposes, a method of constructing the new printing mechanism is represented of the accompanying drawing, on which:

Fig. 1 is an elevation and Fig. 2 is a plan view, from above, showing the assembly, while Figs. 3 to 6 are diagrams of the winch mechanism and the roller guiding runway for bringing the roller into the position for being automatically released and causing the release.

These diagrams show the roller and its driving chain as well as the automatic return winch gearing in the different positions occupied up to the moment of release.

Figs. 7 to 10 are diagrams showing the different positions occupied by the single toothed gear which produces the intermittent rotaion of the drum with compartments called the ring drum (for receiving the rings designating-the pigeons). These positions correspond respectively to those of the winch mechanism shown in Figs. 8 to 6.

The diagrammatic mechanism shown in Figs. 7 to 10 having been completely described in the former patents citedabove in connection with the printingmechanism, it

will not be otherwise mentioned in the following and the description as well as the claims will be strictly limited to the particular features of the new mechanism for op erating the printing roller.

The latter mechanism, diagramed in Figs. 3 to 6, is constituted and operates as indi cated hereafter.

The shaft 12 of the printing roller 13 pivots, at each of its ends, in a bearing 1 carried by a chain 15.

In the initial position shown in Fig. 3, the upper end of the chain is wound on the drum of a spring barrel 16, while its lower end is completely unwound from a drum 17. Between the two drums, the chains 15 pass around idler pulleys 18 placed at a level somewhat lower than the drum 16. v

A gear 19 with interrupted teeth 20 is mounted on a shaft 21 which can be rotated by a crank not shown. This gear has an end tooth 22 larger than the others for engaging the end tooth of the interrupted teeth 23 of a gear 24: mounted on the shaft 25 of the counter drum 17.

The shaft 21 carries, in addition, at the end nearest the crank a gear 25 whose single tooth 26 engages the teeth of a gear 27 mounted on the shaft 28 of the ring drum 29. (Figs. 7, 8 and'9.)

Each tooth of the gear 27 corresponds with one of the compartments 30 of the ring drum; the gear 27 turns therefore through an angle corresponding to one of the compartments 30 when the crank operating the shaft 21 makes one revolution.

The crank turns the shaft 21 and the gear 19 in the direction indicated by the arrow 31, the said gear 19 in turn driving the gear 24: as shown in Figures 1 and 5, which. causes the chains 15 to wind on the counter drum 17.

In the position shown in Figure 6, the disengagement of the teeth frees the gear 24, and the chain 15 is pulled back by the action of the antagonistic spring placed in the barrel 16 but not represented.

The said chain then unwinds from the counter drum 17 is wound again on the drum of the barrel 16 bringing the roller back to its initial position as shown in Figure 3.

During the movement of the chain wind ing onto the counter drum 17 the printing roller 13 is carried along by the said chain and moved longitudinally as shown in Figures 3 to 6.

During this movement of the roller, the bearings 14; which sup ort its shaft fen counter 'a runway 32 placed horizontally. The runway therefore makes a certain angle. with the upper length of chain which is inclin'ed.

The passage of the bearing 14 on the upper surface of the above mentioned runway, causes a raising oftheupp'er length of chain. as clearly shown in Fig. 5, "it being noted that the dotted line would represent the normal direction of the chain it the runway was not there. lVIoreover, the bearings exert pressure on the runway since the chain is tightened by the action of the spring in the barrel 16.

\Vhen the bearing 14- reaches the end of the runway 32, it is released from the runway by the tension of the chain and takes the position shown in 6. At the same time, the driving gear 19 releases the driven gear 24 as shown in the said Fig. 6, on account of its interrupted teeth.

The gear 24 being thus freed, the chain 15 comes back suddenly, on account of being rewound on the drum of the spring drum 1G, and the mechanism returns to the position indicated in Fig. 3.

During the sudden return of the chain, the bearings 14- of the roller 13 come back, guiding on the lower surface of the runway 32, and, during this return stroke, the said roller exerts a pressure on the paper band 33 so as to press it against the plate 3 1 (Fig. 1) and produce the impression.

So as to better insure the engagement of the bearing 14 successively on the two surfaces of the runway 32, the two ends of the runway are beveled at'35 and 36.

From the above, it results that the ring drum advances one compartment for each impression produced by the roller.

In the practical eonstructi on of the mechanism as shown in Fig. 1, the diagrammatic runway 32 with two surfaces is supplemented by two superimposed guide grooves 37 and 38.

The driving mechanism for the paper band 33 and the arrangement of the inking ribbon being, in principle, identical with those described in the former inventions cited above, no special indication will be given concerning them.

It will be perceived, without other explanation, that the pressure exerted by the roller for pressing the paper band 33 against the plate 34: may be easily regulated by lowering or raising more or less the double groove for guiding the shaft of the said roller. v

The device enablincr the double guide grooves to be raised or lowered at will is not described or represented herein as any craftsman is capable of constructing immediately and easily such a device, which besides does not form a particular feature of the invention.

What I claim is. f

1. Printing mechanism of the class described, comprising a drum, spring rotated in one direction, a counter drum, flexible e1einent's connecting said drums, a roller carried biysaid flexible elements and movable therewith back and forth between the drums, a runway for the roller arranged at an angle to said flexible elements to cause said roller to move on one side thereof as said roller travels from the drum to the counter drum and to move on the opposite side thereof as said roller travels in the reverse direction, and a printing element, opposite the last named side of the runway and against which said roller imparts a printing impression as said roller travels from the counter drum to the drum.

2. Printing mechanism of the class described, comprising a drum, spring rotated in one direction, a counter drum, flexible elements connecting said drums, a roller carried by said flexible elements and movable therewith back and forth between the drums, a runway for the roller arranged at an angle to said flexible elements to cause said roller to move on one side thereof as said roller travels from the drum to the counter drum and to move on the opposite side thereof as said roller travels in the reverse direction, and a printing element, opposite the last named side of the runway and against which said roller imparts a printing impression as said roller travels from the counter drum to the drum, and means to operate the counter drum.

3. Printing mechanism of the class described, comprising a drum, spring rotated in one direction, a counter drum, flexible elements connecting said drums, a roller carried by said flexible elements and movable therewith back and forth between the drums, a runway for the roller arranged at an angle to said flexible elements to cause said roller to move on one side thereof as said roller travels from the drum to the counter drum and to move on the opposite side thereof as said roller travels in the reverse direction, a printing element, opposite the last named side of the runway and against which said roller imparts a printing impression as said roller travels from the counter driun to the drum, and means, including a shaft geared to the counter drum to operate the counter drum.

4:, Printing mechanism of the class described, comprising a drum, spring rotated in one direction, a counter drum, flexible elements connecting said drums, a roller carried by said flexible elements and movable therewith back and forth between the drums, a runway for the roller arranged at an angle to said flexible elements to cause said roller to move on one side thereof as said roller travels from the drum to the counter drum and to move on the opposite side thereof as said roller travels in the reverse direction, a printing element, opposite the last named side of the runway and against which said roller imparts a printing impression as said roller travels from the counter drum to the drum, and controlling means, including a driving shaft and interrupted gears connecting said shaft to the counter drum, to alternately operate and release the counter drum.

In witness whereof I aflix my signature.

HECTOR PLASSCHAERT. Witnesses:

J. MAY, J. DURIOUR.

Images