An Improved Moulders' Pin or Nail.
Year: 1893

page_text: Date of Application, 5th Aug., 1893
Complete Specification Left, 3rd May, 1894-Accepted, 9th June, 1894
PROVISIONAL SPECIFICATION.
An Improved Moulders' Pin or Nail.
:-
I, FRANZ SCHULTE, of 46 Pferdemarkt, Hamburg, in the Empire of Germany,
Pattern-maker, do hereby declare the nature of this invention to be as follows:-
My invention relates to an improved moulders pin or nail.
It has heretofore been customary to use pins or nails for holding the sand of
moulds better together or for fixing the cores, such pins or nails having the shape
of ordinary round nails with a flat head and a length which varies according to
requirements. The pins or nails are simply inserted into the sand in order to hold
it together at such points of the mould as are most liable to be injured or break
away or they serve for fixing or holding down cores, the latter being secured upon
the sand by means of two or more pins or nails.
The moulder's pins or nails heretofore employed have the defect that they are
liable to become loose in the sand, thus rendering it necessary, in order to obtain a
sufficient hold, to employ a comparatively great number of the same. To obviate
this inconvenience is the object of my said invention.
The improved moulder's piu or nail is split so as to form two springy shanks
connected with each other by a head. The lower ends of the shanks are beveled
at their inner edges. It is expedient to make this pin or nail of half-round wire, its
shanks and head being formed of a single piece.
When such a moulder's pin or nail driven into the sand its shanks are forced
apart by the latter in consequence of the wedge-shaped bevels at their ends, thus
giving the pin or nail a better hold in the sand, which will also be better kept
together, because the springy shanks firmly hold a certain quantity of sand between
them. With the improved pin or nail the same or a better effect is obtained than
with at least two ordinary moulder's pins or nails.
Dated this 5th day of August 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Moulders' Pin or Nail.
I, FRANZ SCHULTE, of 46 Pferdemarkt, Hamburg, in the Empire of Germany,
Pattern-maker, 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 :——
My invention relates to an improved pin or nail to be used by moulders for
holding the sand of moulds better together, or for fixing or suspending the cores in
such moulds.
It has heretofore been customary to use tacks, pins or nails for the said purpose,
such pins tacks or nails having the shape of ordinary round nails with a flat head
and a length which may be varied according to requirements. The pins or nails
are simply inserted into the sand in order to hold it together at such points of the
mould as are most liable to be injured or break away, or they serve for fixing or
supporting or holding down cores, the latter being secured upon the sand or
suspended within the mould by means of two or more pins or nails.

page_text: The moulder's pins or nails heretofore employed have the defect that they are
liable to become loose in the sand, thus rendering it necessary, in order to obtain a
sufficient hold, to employ a comparatively great number of the same. The object
of the present invention is to obviate this inconvenience.
In the accompanying drawing, in which similar letters of reference indicate
corresponding parts throughout the several views,
Figure 1, shows a front and a side elevation of my improved moulder's tack or
pin in the position as when out of use.
Figure 2 represents the same in the position it may occupy when inserted into
the sand of the mould;
Figures 3 and 4, represent a front and a side elevation of a tack or pin embodying
my invention, particularly adapted for suspending cores in the mould, and,
Figure 5 is a top view of the same.
The improved moulder's pin or tack is split so as to form two elastic shanks a a
connected with each other by a head b. The lower ends of the shanks are bevelled
at their inner edges a' a'. When employing this nail or pin for simply holding the
sand of the mould together, it is expedient to make the same of half round wire, its
shanks and head being formed of a single piece, Figures 1 and 2. The tacks or
pins designed for suspending cores in the mould are preferably made of flat or sheet
metal and their shanks and head made separately and then united by rivetting
(Figures 3 to 5).
When such a moulder's tack or pin is driven into the sand its shanks are forced
apart, as illustrated by Figure 2 and by dotted lines in Figure 3, by the sand in
consequence of the wedge-shaped bevels a' a' at their ends, thus giving the tack or
pin a better hold in the sand, which also will be better kept together, because the
elastic shanks a a firmly hold a certain quantity of sand between them. With the
improved pin or tack the same or a better effect is obtained than with at least two
ordinary pins or nails.
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
clain is-
A moulder's tack or pin having a head 6 and shanks a a, the proximate faces at
the outer end of said shanks being bevelled in opposite directions, to form a wedge-
shaped slot between them, said shanks being sufficiently elastic to spread when
inserted into the sand, substantially as and for the purpose set forth.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.