A New or Improved Machine for Making Joints by Means of Sheet Metal Staples or Clamps.
Year: 1893

page_text: Date of Application, 24th Oct., 1893-Accepted, 25th Nov., 1893
COMPLETE SPECIFICATION.
A New or Improved Machine for Making Joints by Means of
Sheet Metal Staples or Clamps.
I, JOSEF TEMLER, of Warsaw, in the Empire of Russia, and 30 to 34
Tabernacle Street, in the County of London, Manufacturer, 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 :—
This machine for making joints by means of sheet metal staples or clamps
contains a novel device for feeding the clamps automatically under the plunger for
forcing the clamps through the sheets or plates to be joined.
The machine moreover presents an improvement whereby the joints of the clamps
projecting on the inner or under side are bent over inwardly.
The feed motion for feeding the clamps to the point where they are to be used is
constructed as follows for clamps such as shown in Figs. 1 and 2 and 3 and 4 which
serve for joining corners or surfaces.
In a chamber a, a number of cells a¹ are placed vertically, their interior being so
arranged that the clamps can be stored therein only inone certain position which
is equal for all clamps and not changeable. The clamps touch one another by
their heads, whilst the pointed teeth projecting therefrom are all in the same plane as
shown in Figs. 5 and 6 for clamps for corner joints such as are represented in
Figs. 3 and 4. For clamps of the form shewn in Figs. 1 and 2 and other shapes
the cells a' are correspondingly modified.
The chamber a shown as cylindrical in the drawings is free to turn on the
support b. The latter has an aperture of such shape that one of the clamps located
in a cell a¹ may pass.
On the support ba stop device c is provided whereby the position of the magazine
or chamber a can be so adjusted on b that one of the cells is exactly over the
aperture in the support b allowing the clamps in the cells to issue. "When the
chamber a is turned so that part of each of two cells face the aperture no clamps
can issue from either and the magazine is thus closed below.
For feeding a clamp from the magazine or chamber a to the place where it is to
be applied, that is to say to bring the clamp under the plunger moving in the
sheath t (the plunger serving to force the clamps into the material to be joined) a
bridge piece d is provided. The bridge piece d is similar in arrangement to the
cells a¹ in magazine a so that the clamps remain in the same position when passing
into the bridge piece. The bridge piece d curves from the aperture below the
magazine towards the sheath t (surrounding the plunger) the curve being such that
the clamps move therein by reason of their own weight.
In continuation as it were of the hollow interior of the bridge-piece d a passage
is provided in the sheath for the clamps.
When the magazine is so placed on the support that the aperture in the latter is
in line with one of the cells a¹ in the former the clamps contained in such cell fall
into the bridge piece d and actuated by their own weight the clamps move in the
hollow bridge piece towards the place of their application, i.e. under the plunger s.
The clamp can however pass under plunger only at the time when the plunger is in
its highest position that is to say when the plunger is at rest. Whilst the plunger s
descends and rises again the clamps can not pass from the bridge piece into the
sheath t.
Instead of placing the cells in a circle as shown in Fig. 6 they may be arranged
in a straight line as seen in Fig. 7 of the drawings in the latter case the magazine
moves in a straight line along its support.
The clamps may also be stored helically in a suitable casing such as shown in

page_text: Figs. 8 and 9. In such case the bridge piece forms an S shaped continuation of
the helical casing its cross section corresponding with that of the casing.
As in the last case the weight of the clamps is not sufficient to ensure their
movement a cylindrical brush e is provided within the casing to propel the clamps
and this is operated in any suitable manner. A rachet wheel on the spindle of
the brush may serve for this purpose being operated by a pawl k (moved by the
machine) so that the points of the bristles carry the clamps towards the bridge
piece.
The following arrangement serves to bend over the clamp-points that project
below the plates or sheets to be joined when the clamps are forced through.
The anvil upon which are laid the plates or sheets to be joined consists of the
halves. Each half is capable of moving on an inwardly inclined plane g. A
spring h holds up both halves f of the anvil so as to maintain them in their highest
position. The spring / must be strong enough to offer sufficient resistance to the
pressure exerted when the clamps are being driven through. The spring should
yield only when the head of the clamp rests on the plates so that the full pressure
of the plunger s acts on the parts below and hence on the spring also. When the
spring yields it allows the halves f of the anvil to descend. As in doing so the
said halves move inward against the inclined planes 9 they approach one another
and bend the points of the clamps.
g
Instead of causing the anvil halves to move against inclined planes 9 as in
Fig. 10, they may be arranged to swing on pins z see Fig. 104, this also producing
the approach of the halves which causes the bending of the points.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
A machine for producing joints by means of metal clamps or rivets such machine
being characterized by
1. The feed device for conducting the clamps to the point of their application
consisting in a magazine a the interior of such device having either vertical cells
closed by the support 6 of the device (the latter having a suitable passage) or a
helical chamber a¹ within which cells or chamber the clamps are stored in uniform
and unchangeable position whilst the bridge-piece d serves to conduct the clamps or
rivets from the chamber a to the point of application under the plunger s the clamps
being carried forward either by their own weight or by an automatic circular
brush e.
2. The device for bending over the clamps points projecting beyond the
sheets or plates to be joined such device consisting in having two anvil halves ff
mounted on a spring and acting on inclined planes 9 or studs so that when the
full pressure of the plungers acts upon the anvil the latter being depressed its
halves move inward and bend the points.
Dated this 24th dev of October 1893
NEWNHAM BROWNE,
Agent for the Applicant.