Improvements in the Method and Apparatus for Cementing or Connecting Pieces of India-rubber.
Year: 1893

page_text: Date of Application, 24th June, 1893-Accepted, 5th Aug., 1893
COMPLETE SPECIFICATION.
Improvements in the Method and Apparatus for Cementing or
Connecting Pieces of India-rubber.
We, ALBERT MEYENBERG, Manufacturer, of Lange Strasse 61, Frankfort-on-
the-Main, and JOHANNES OTTO MEIX, Manufacturer, of The Rubber Works,
Tegeler Landstrasse, in the City of Berlin, both in Germany, do hereby declare
the nature of this invention and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:-
The joining of pieces of india-rubber has been hitherto effected by means of the
application on the jointing surfaces of a solution of rubber and benzine or ether, the
surfaces being afterwards firmly pressed together. These solutions have a certain
chemical action upon the india-rubber, resulting in the dissolution of the rubber at
the immediate vicinity of the joint; thus producing a joint which has a dirty
appearance, rendering its use impossible in certain circumstances, and generally
lessening its durability.
Our new method hereafter described permits of joining rubber pieces in a simpler
and more effective manner.
Referring to the accompanying drawings which illustrate an apparatus which is
especially adapted for the execution of our new method―
Figure 1 is an elevation and Figures 2 and 3 are plans of the apparatus whose
construction and working are as follows-
The india-rubber pieces to be connected are laid upon a smooth iron plate a which is
covered with paper.
The iron plate is then moderately heated by a heating
apparatus arranged underneath. Alongside the plate a is placed another plate b
made of soft material which will permit of the paper for covering the plate a
being fastened thereto by means of drawing or other pius.
A cover plate c is hinged to this plate and to it is secured a semicircular pressing
ring and knife d; the configuration of the pressing ring and knife however vary to
suit the seam or joint to be formed. The cover c, as also the plate a are covered
with paper for the purpose of preventing the rubber adhering to their surfaces, the
fastening of which is effected around the frame or handle e A knob is secured
to the cover plate c for the purpose of manipulation.
The rubber pieces to be connected are placed upon the plate a their edges
slightly overlapping each other, in such a position that they shall be met by
the pressing plate and knife d at that place where the joint or seam is to be made.
One piece is shown in position at Figure 3. The arrangement of knife and pressing
plate d is such that while effectively pressing the two jointing surfaces together
it severs the superfluous material and produces a seam or joint of very small breadth
along the edge of the rubber pieces which lie over each other.
By this method a durable joint or seam is produced having a neat appearance,
and is almost imperceptible.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is-
1. A method of joining india-rubber picces which are moderately heated and
subjected to pressure; while in the same process the cutting off of the superfluous
material is effected for the purpose of producing a neat joint or seam.
2. An apparatus for carrying into effect the process described under Claim 1,
consisting of a plate a which is heated and serves for the reception of the rubber
pieces to be connected, and a cover c secured to the plate a by a hinge this cover
carrying a knife of such description that on the cover being turned over a pressure

page_text: is applied where the joint or seam is to be made, and the superfluous material
severed, substantially as herein before described and illustrated.
Dated this 24th day of June 1893.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents.