Improvements in Railway Permanent Way Chair Wood Keys or Wedges.
Year: 1891

page_text: Date of Application, 11th May, 1891
.
Complete Specification Left, 15th Feb., 1892-Accepted, 26th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Railway Permanent Way Chair Wood Keys or
Wedges.
I, GEORGE INGRAM of 4ª Chapel Street Marylebone, in the County of Middle-
sex Clerk, do hereby declare the nature of this invention to be as follows:-
I make a groove along the middle and throughout the length of the wood key
or wedge. Into the said groove I place a strip of hoop-iron or other ductile metal,
I secure the said strip of metal to the said wood key or wedge by means of one or
more screws or nails near the centre or by any other suitable means.
When the said wood key or wedge is driven into its position in the chair the
ends of the said metal strip are free to lap over the side or sides of the chair
thus keeping the said wood key or wedge in the position to which it was driven.
Dated this 14th day of May 1891.
GEORGE INGRAM.
COMPLETE SPECIFICATION.
Improvements in Railway Permanent Way Chair Wood Keys or
Wedges.
I, GEORGE INGRAM, of 44 Chapel Street, Marylebone, in the County of Middle-
sex, Clerk, 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 :-
I make a groove along the middle and throughout the length of the wood key or
wedge, and into the said groove I place a strip of hoop iron or other ductile metal.
1 secure the said strip of metal to the said wood key or wedge by means of one or
more screws or nails near the centre or by any other suitable method. When the
said wood key or wedge is driven into its position in the chair the ends of the said
metal strip are free to lap over the side or sides of the chair, thus keeping the said
wood key or wedge in the position to which it was driven. The fastening-hole or
hole's countersink in the metal strip is stamped, not drill'd, thus the head of the
fastening is well protected from friction.
In my use of wire for my said purpose i make a round or slotted hole through,.
horizontally across, and in the middle of the said wood key or wedge. I double
a suitable length of wire and put the two ends through the said hole from the inner
side of the said wood key or wedge, driving the loop made in doubling the wire
even with the wood of the key. I then bend the wire passed through the said hole-
into a groove made from end to end, and along the middle of the outer side of, the
key or wedge, the wire overhanging the key at one end, and turned up at the
driving end to escape contact with the hammer when being driven. The wire,.
being in the groove also escapes friction.
When the key is driven to its position in the chair both ends of the said wire.
are available for lapping over the side or sides of the chair, thus preventing the
said key or wedge from slackening and coming out of its place.
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 :-
1. Hoop iron, strip of metal, or wire fitted and fixed in a groove made along the
middle of the ordinary railway permanent way wood key or wedge, whereby the

page_text: said wood keys or wedges are held secure in their places by reason of the said hoop
iron, strip of metal or wire being made to lap over the side or sides of the chair,
substantially as described and as shown in Figs. 1 and 3.
2. Method of screwing the said hoop iron or strip of metal to the wood key or
wedge as described and as shown at A Fig. 3.
3. Stamped counter-sunk hole for central screw, at B Fig. 4.
4. The form of the wire Fig. 2.
5. Method of fixing the wire in the wood key or wedge substantially as described
and as shown at C Fig. 1.
6. The combination of a strip of ductile metal or length of wire with the
ordinary wood key or wedge substantially as described, as shown in Fig. 2 and
fixed in Fig. 1.
Dated this 13th day February 1892.
GEORGE INGRAM.