US789068A - Apparatus for printing warps on printing-drums. - Google Patents

Description

No. 789,068. PATENTED MAY 2, 1905. F. SCHMIDT. APPARATUS FOR PRINTING WARPS 0N PRINTING DRUMS.

AYPLIGATION FILED SEPT. 12, 1903.

v 2 SHEETSSHEET l.

No. 789,068. PATENTED MAY 2, 1905. F. SCHMIDT. APPARATUS FOR PRINTING WARPS ON PRINTING DRUMS.

APPLICATION FILED SEPT. 12, 1903.

2 SHEETS-SHEET 2.

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NITED STATES Patented May 2, 1905.

PATENT OFFICE.

FRANZ SCHMIDT, OF OBERSGHQNEWEIDE, GERMANY.

SPECIFIGATION forming part of Letters Patent No. 789,068, dated May 2, 1905.

Application filed September 12, 1903. Serial No. 172.909.

To all whom it may concern.-

Be it known that I, FRANZ SCHMIDT, factory proprietor, a subject of the Emperor of Germany, residing at 7 Edisonstrasse, Oberschoneweide, near Berlin, in the Empire of Germany, have invented certain new and useful Improvements in Apparatus for Printing arps on Printing-Drums, of which the following is a specification.

The present invention relates to an apparatus for printing warps on printing-drums, wherein it is essential that the adjustment of the printing-drum be effected in such a manner that its movement is dependent upon the movement of the adjusting device for the design. Hence there must exist such a relationship between the adjusting device, consisting,

for instance, of an indicating device and a pattern-carrier, and the printing-drum that owing to the relative movement occurring between the indicator and pattern-carrier a movement and adjustment of the printingdrum is effected. The inducement for the movement of the printing-drum can at the same time be given by the pattern-carrier or by the indicating device, or by both simultaneously. In order to obtain a sharp coincidence between the movement of the adjusting device and the movement of the printingdrum and to admit of the use of transmitting mechanism of the simplest kind, it is of importance that the pattern-carrier be directly connected to the printing-drum, so that on adjusting the design on the indicating apparatus the adjusting of the printing-drum is automatically effected. The driving mechanism will be all the more simple if a uniform movement be had between the pattern-carrier and the printing-d rum z'. a, byalso forming the pattern-carrier as a drum. It is, furthermore, important that there be mounted between the pattern-carrier and the printing or warp drum interchangeable or adjustable driving-mechanism transmissions.

The advantages afforded by the present apparatus in comparison with previously-existing devices are manifold, but reside principally in greater rapidity of Work and greater accuracy in adjustment.

Hitherto the printing of warps was carried out by using colored patterns with thread and color-line numbers. The latter were fastened to amovable ruler and corresponded to colorline numbers which were provided on the edge of the printing-drum. On desiring to print the printing-drum had to be adjusted to a certain color-line number and held fast till the printing-wheel had completed its travel under the drum. This was a tedious process, as the adjustment of the drum had to be preceded by a search for the number on the colored pattern or drawing. To this tediousness in work there was added the fact that the operator had no exact picture of the pattern before his eyes, as that very part of it which was being printed was covered up by the ruler with the numbers. Owing to the repeatedly necessary lifting of the ruler the numbers and marks became dirty and illegible, and the result of this was continual mistakes in printing. The printingwork was also rendered diflicult, for the reason that the boards upon which the patterns were could in most cases only be made very large and heavy. The troublesome changing of the colors also often gave rise to continual mistakes. This continual changing had, furthermore, the drawback that the colors from one open trough easily got into another or others, so that a not unimportant part of the colors was lost. These drawbacks are done away with by the presentinvention. As the adjustment of the printing-drum depends upon the movement of the adjusting device, the operators task is greatly facilitated. It is therefore of great importance that in the new device the arrangement be made in such a way that the operative always sees the entire pattern before him, while in the old devices the part which was actually required for printing was covered over by the ruler. The operatives eyes are no longer tired by having to carefully read ofi' the numbers on the drawing (pattern) and then look for them on the printingdrum. He is therefore able to devote his whole attention to the colors of the drawing. As there is no longer any ruler to be lifted, the adjustment being effected by means of an index which need not come in contact with the patand the same time.

tern-drum, the drawingis no longer exposed to soiling. N 0 numbers are necessary either on the pattern-drum or on the warp-drum.

A further advantage of the device is that it can be adjusted in a simple manner for printing various patterns or matchings one above the other, the desired relationship between the movement of the adjustment device and the number of revolutions of the warp-drum being effected by changing the transmissionwheels or the like. By a suitable selection of the wheels transmitting the movement the pattern-drum can, for instance, upon one revolution of the warp-drum be given one, two, or more revolutions.

A constructional form of the new device is shown in the accompanying drawings.

Figure 1 is a side elevation of the patterndrum and warp-drum. Fig. 2 is a face view of Fig. 1, and Fig. 3is a plan of the apparatus.

The warp-drum 1 is provided on its periphery with a crown of teeth 2, which, by means of the spur-wheel 3 and the bevel-wheel gear 4, is

connected to the hand-wheel 5. Upon the shaft of the spur-wheel 3 there is a spur-wheel 6. This engages with a spur-wheel 7, which serves for the direct drive of the pattern-drum 8. This drum contains the pattern subdivided in the manner known. A rod 9, with an indicator 10, is arranged to slide in the direction of the axis of the pattern-drum 8. In order toadmit of easy reading off, the point of the indicator 10 is placed close to the periphery of the drum. The periphery of the drum 8 amounts to a fraction of the periphery of the yarn-drum 1, and the transmission-wheels 7 6 are selected in such a manner that the pattern-drum upon a single revolution of the yarn-drum is caused to rotate several times corresponding to the patterns ormatchings to be printed one above the other.

The manipulation of the apparatus is eflected in the following manner: The operative places the indicator upon the threads to be printed. He then turns the hand-wheel 5 till the indicator 10 points to the check or square to be printed. The printing of the warps can then be immediately proceeded with in the usual manner by means of rollers or the like, as the warp-drum has been automatically adjusted at the same time as the pattern-drum.

The new apparatus can be altered in many ways. Whereas in the arrangement shown the indicator 10 is immovable-in a vertical direction and the drum 8 turns, a movable indicator and a stationary pattern-carrier could be used, or both could be made to move at one The drum could also be replaced by a movable board or the like. The driving device for the two drums can also be altered in suitable manner. In any case it is essential that the adjustment of the printingdrum be effected in such a manner that its movement is dependent upon the movement of the adjusting device for the pattern.

What I claim, and desire to secureby Letters Patent of the United States, is

1. In devices of the character described, a pattern-drum and an indicator, one of which elements is movable relatively to the other, a 1

2. In devices of the character described,- the combination of a rotatable pattern-drum, and an indicator, a rotatable printing-drum, and a transmitting-gear for causing the movement of said pattern-drum to impart a relative movement to the printing-drum.

3. In a device of the character described, the combination of a pattern-carrier, an indicating device, one of said members being movable relative to the other, amovable printing member, and means for causing the movement of the movable one of said first-named members, to cause a relative movement of the printing member.

4. In a device of the character described, the combination of a movable pattern-carrier, an indicating device, a movable printing member, and means for causing the movement of the pattern-carrier, to cause a relative movement of the printing member.

5. In a device of the character described, the combination of a pattern-carrier, an indicating device, one of said members being movable relative to the other, amovable printing member, connections between the movable one of said first-named members and the printing member, for causing a relative movement of the printing member, and means for varying said connections so as to vary the relative movement of the printing member by said movable member, said printing member having a greater surface area than said patterncarrier.

6. In a device of the character described, the combination of a printing-drum, crownteeth arranged at one end of the drum, a shaft having a gear engaging said. crown-teeth, a second gear on said shaft, a pattern-drum of smaller diameter than the printing-drum, a gear connected with said pattern-drum and engaging said second gear, a third gear on said shaft, an operating-shaft having a gear thereon engaging said third gear, an operating-wheel on said second shaft, and an indicating device arranged in proximity to the drum of the printing-drum.

In testimony whereof I have hereunto set my hand, in presence of two subscribing witnesses, this 27th day of August, 1903.

FRANZ SCHMIDT.

Wi tn esses HENRY HASPER, v WOLDEMAR I-IAUPT.

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