Improved Means for Facilitating the Turning of Vehicles.
Year: 1890

page_text: Date of Application, 16th June, 1890
Complete Specification Left, 16th Mar., 1891-Accepted, 18th Apr., 1891
PROVISIONAL SPECIFICATION.
Improved Means for Facilitating the Turning of Vehicles.
I, THOMAS HARGREAVES BRIGG, of Bradford, Yorkshire, Machine Maker,
do hereby declare the nature of my said invention to be as follows:-
This invention relates to improved means of connecting the fore carriage and fore
part of two axled vehicles, the improved means being intended to be used in lieu of
the ordinary wheel or turning plates with which such vehicles are ordinarily applied
and being of advantage in avoiding the excessive friction inherent to such wheel or
turning plates and in consequently facilitating the turning movements of the vehicle,
and in avoiding the fore and aft tilting of the fore carriage to which it is subject
when applied as ordinarily with such wheel or turning plates and supported by top
and bottom elliptical springs.
In carrying out the invention, 1 adapt to the fore carriage a depending tubular
support which may be screwed thereinto or bolted thereto in a position vertically
above the centre of the axle of the fore carriage, and by tie rods connecting between
a surrounding collar or the like adapted to the lower part of such tubular support
and diametrically opposite or widely adjacent parts of the fore-carriage or otherwise
in any suitable manner, I rigidly secure the support in position.
The interior of such support is drilled of a parallel or slightly tapered form for
the reception of a correspondingly forined perch bolt and is adapted to receive and
contain a supply of oil or other suitable lubricant. Its bottom end is preferably
When
fitted with a removable screw cap permitting of ready access to its interior.
in position such cap supports a leather washer upon which the lower end of the perch
bolt rests.
The perch bolt is likewise screwed into and by projecting stay bars or otherwise.
in any suitable manner is rigidly secured to the fore-part of the vehicle, depending
therefrom (or from the perch if the vehicle be fitted with a perch extending from
the rear axle to over the fore axle) into the aforesaid tubular support carried by
the fore-carriage. Adjacent to its bottom end the perch-bolt is formed with a
surrounding groove, into which a screw, screwing through the said support, can be
inserted, thus securing the parts together but permitting of the desired turning
inovements. The part of the perch-bolt depending within such support is preferably
case-hardened, and is vertically grooved so as to be kept well lubricated throughout
its length. Immediately above the top rim of the said support the perch bolt is
preferably formed with a flanged cap adapted to enclose a leather washer interposed
between the superposed metal surfaces. By means of such washers vibration of the
superposed metal parts is avoided and the smooth and easy working of the device
is ensured.
Dated this 10th ton of Tune 1800.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improved Means for Facilitating the Turning of. Vehicles.
1, THOMAS HARGREAVES BRIGG, of Thornton Road, Bradford, Yorkshire,
Engineer, do hereby declare the nature of the said invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
This invention relates to improved means of connecting the fore-carriage and the

page_text: fore part of two axled vehicles, the improved means being intended to be used in
lieu of the ordinary wheel or turning plates with which such vehicles are ordinarily
applied, and being of advantage in avoiding the excessive friction inherent to such
wheels or turning plates, and consequently, in facilitating the turning movements of
the vehicles, and in avoiding the fore and aft tilting of the fore-carriage, a
disadvantage to which the latter is subject when applied as ordinarily with such
wheel or turning plates and supported by top and bottom elliptical springs.
On the accompanying drawings:
Fig. 1, represents a side elevation, partly in section, of the fore part and fore-
carriage of a vehicle, connected according to the present improvements.
Fig. 2, represents a sectional plan view, and
Fig. 3, represents a sectional elevation, on an enlarged scale.
According to the invention, I rigidly secure to the fore-carriage 4, a depending
tubular support or socket 5, by screwing the same into a boss 6, formed with
diametrically opposite or widely distending arms 7, bolted as at 8, to convenient
parts of the fore-carriage, also, if required, staying the lower part of the socket by
similarly disposed tie-rods 9, connecting a surrounding collar 10, (vide Fig. 3,) with
convenient parts of the fore-carriage. Or otherwise, in any suitable manner,
rigidly secure such socket to the fore-carriage, in a position vertically above or just
in advance of or behind the centre line of the axle of the fore-carriage.
The interior of the socket is truly turned of a cylindrical or slightly tapered
formation for the reception of a correspondingly shaped perch-bolt 11. Its upper
part is also formed with a chamber 12, adapted to receive and contain a supply of oil
or other lubricant, access being had thereto through a lateral opening 13, closed by a
screw-plug or in any other convenient manner. Its bottom end is fitted with a
removable screw-cap 14, permitting of ready access to its interior.
The perch-bolt is likewise rigidly secured to the fore part of the vehicle by
screwing the same into a boss 15, formed with widely radiating arms 16, bolted as
at 17, to convenient parts of the fore part of the vehicle, its upper end being
entered into the bottom end of the vehicle 18, and secured by a screw-nut 19. Or
I otherwise, in any suitable manner, rigidly secure the perch-bolt to the fore part
of the vehicle, so as to depend therefrom (or from the perch if the vehicle be fitted
with a perch extending from the rear axle to over the fore axle) into the socket 5,
supported by the fore-carriage.
Adjacent to the bottom end, the perch-bolt is formed with a surrounding
groove 20, which permits of a screw 21, being inserted through the socket, so as
to secure the parts together while also allowing of the necessary turning
movements.
The part of the perch-bolt depending within the socket is preferably case-
hardened, and is vertically grooved as at 22, so as to be kept well lubricated
throughout its length. Its bottom end rests on a leather washer 23, supported
by the screw-cap 14. Its upper part, immediately above the top rim of the
socket 5, is preferably formed with a flanged cap 24, adapted to enclose a
leather washer 25, supported by the rim of the socket, the washers being thus
interposed between the adjacent metal surfaces, prevent chattering thereof and
ensure the smooth and easy working of the device.
When in its ordinary position parallel with the vehicle, the fore-carriage may
be steadied by one or more springs 26, carried thereby and bearing against one
or more flattened faces 27, formed on the flanged rim 24, of the perch-bolt, or
in any other suitable manner.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The hereinbefore described improved means of connecting the fore-carriage
and the fore part of vehicles.

page_text: 2. In apparatus for connecting the fore-carriage and the fore part of vehicles, the
use in combination, of a socket secured to the one part and a perch-bolt. secured to
the other part, co-operating substantially as hereinbefore described.
Dated this 16th day of March 1891.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C., Agents for the Applicant.