LUBRICATORS, THE SAME BEING PARTICULARLY APPLICABLE FOR LUBRICATING THE BEARINGS OF BICYCLES, TRICYCLES, SEWING MACHINES, AND FOR OTHER LIKE PURPOSES
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by Herbert Frederick Lawrence and
Henry Stokes at the Office of the Commissioners of Patents
16th September 1881.
"
on the
HERBERT FREDERICK LAWRENCE, Works Manager, and HENRY STOKES, jeweller,
CERTAIN IMPROVEMENTS IN
hoth of Birmingham, in the County of Warwick.
LUBRICATORS, THE SAME BEING PARTICULARLY APPLICABLE FOR LUBRICATING THE
BEARINGS OF BICYCLES, TRICYCLES, SEWING MACHINES, AND FOR OTHER LIKE
PURPOSES."
Our improved lubricator is formed by casting or otherwise, the body of the oil
receiving portion of the lubricator with a circular countersunk or other shaped
hole for receiving the lubricant, which vessel may be of any suitable and convenient
shape, the lower end of which is tapped (and has the necessary hole in it for the
escape of the lubricant) for screwing on the lubricator in connection with the parts
requiring lubrication, and an hexagonal or other shaped flange is also formed on it
A short distance above and
for the purpose of facilitating the screwing of it on.
directly over the hole in the receiver is a projecting circular or other formed collar
or flange, which is carried by an arm or stem from the receiver (the parts already
mentioned are cast in one piece). On the top of this collar or flange a small.
circular or other shaped boss is secured by solder (or otherwise); through this boss
and flange we drill (or otherwise) a hole, this hole being exactly over the one in the
receiver, and across the centre of the boss and hole we slot out or otherwise form
a narrow groove of a suitable depth for the purpose hereafter to be described.
Through this central hole, or slot, or groove, last mentioned a small pin works, the
one end of which is screwed or otherwise secured to a small circular metal top or
head, and underneath the head of this pin two projections or arins are secured
corresponding in size and depth (and lying parallel to the central pin) to the groove
or slot formed in the boss; the end of the pin thus described is passed through the
top part of the lubricator, and over the end of this pin or stem is passed a suitable
spiral spring, which is prevented from slipping off by means of a metal washer
screwed or otherwise to the end of the said pin, so shaped as to fit exactly and
cover the countersunk hole formed in the top of the receiver, which may if required
have a leather or other washer secured underneath it,

page_text: The said spring works in the space between and through the top part and the
hole of the receiver; the other end of the spring works against and into a suitable
recess form in the boss at the top before mentioned. The head of the pin or metal
top has a slight circular projecting edge, which is milled or otherwise roughed to
facilitate the catching hold of it with the finger and thumb; thus, when the
lubricator requires replenishing you have only to pull up sufficiently high the
central pin (to which the spring, is secured) by the milled head until the arms or
projections have worked through the slot or groove and can rest on the boss at the
top of the lubricator, which it will do by simply turning the head of the pin a
little to the right or left. This action at once gives free access to the hole or orifice
for receiving the lubricant, the pin and spring being drawn up into the top portion
described of the lubricator, leaving an open space between the said hole and the
washer or washers at the bottoin of the pin. When the receiver or vessel is full
(which can be easily seen, and which is in itself a great desideratum) you have only
to turn the head of the pin until the two arms or projections underneath the head
again come lineable with the slot or groove in the boss, into which the said arms
readily drop, and is kept there by the action of the spring which at the same time
forces the washer or washers at the end of the pin into the corresponding shaped
orifice which receives the lubricant, thus keeping the contents perfectly clean and
free from dust or grit of any description, and at the same time rendering it
impossible for any of the contents to be wasted. The charging of such lubricators
is very simple by the means herein described, as you have no unscrewing of parts
in effecting the object.