Year: 1887

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, and Co., Patent Agents,
Southampton Buildings in the County of Middlesex 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 invention consists of a sash lock and fastener of novel construction as will be
hereinafter set forth.
Referring to the accompanying drawings,
Figure 1 represents a side elevation of a sash lock and fastener embodying my
invention.
Figure 2 represents a horizontal section in line x x Figure 1.
Figures 3, 4 and 5 represent views of the interior thereof on an enlarged scale.
Figure 6 represents a view of a modification the parts being shewn in the locked
position.
Similar letters of reference indicate corresponding parts in the several Figures.
A represents a casing or box which is secured to the meeting rail of the lower sash
and has fitted within the same a sliding bolt B which is adapted to enter either of the
openings or keepers a, of the window frame said bolt having a handle B' which
projects through the top of the casing whereby the bolt may be readily withdrawn
from said opening. Bearing against said bolt is a spring for holding the same in
locked position.
To the inner side of the bolt B and at a righi angle thereto, is secured a bolt 1)
which is adapted to engage with either of the keepers which are secured to the
upper sash.
It will be seen that the lower sash may be readily fastened to the window frame by
means of the bolt B, and the two sashes fastened together by means of the bolt D,
thus providing security of fastenings of both sashes.

page_text: In order to lock the bolt B there is fitted within the casing A, the pivoted dog E,
and the tumbler F, the nose of said dog being adapted to engage with a shoulder G
on the bolt.
The tumbler has a lug H and the dog has a lug J which engage with each other.
A key is inserted into the casing and as it is turned, it engages with the heel of the
dog and side of the tumbler.
Referring to Figure when the tumbler moves, the lug E leaves the lug J and the
dog turns on its pivot bringing its nose into engagement with the shoulder G thus
locking the bolt B, and consequently the bolt D. The tumbler under action of its
spring returns to its first position whereby the lugs H, J reengage; thus locking the
dog see Figure 4. In order to unlock the bolts the key is rotated in reverse direction.
The tumbler moves and the lug H leaves the lug J. The dog then turns on its pivot
and its nose leaves the shoulder G, thus unlocking the bolts, B, D. The tumbler
returns to its normal position and the lug N reengages with the lug J on the
side opposite to that first named so as to hold the dog in unlocked position sec
Figure 3.
In Figure 6 I have shown the bolt D separate from the bolt B, the dog E being of
different form from the one shown in Figures 2, 3 and 4 and having two noses
instead of one so as to engage with the shoulders or projections G on each of the
bolts Band D. The said dog in the lock in this Figure has a sliding motion being
fitted between a way or guide attached to the back of the casing and the lower wall
thereof. The dog and the tumbler F have each a lug similar to lugs J and H in the
other Figures serving to keep the parts in fixed position until changed by the action
of the key on the dog and tumbler. In locking the bolts the key acts upon the said
dog and tumbler, so as to depress the end of the tumbler which is towards the bolt D
and free the lug J which is in front of the lug H when the bolt is drawn within the
casing at the same time the dog is pushed forward so that the lug H takes a position
on the rear side of the lug J thereby locking the bolts D and B in position as is
readily seen. In unlocking when the key is turned, the action of the dog is such
that the bolt B is caused to be withdrawn within the casing while the bolt D is
released so that it may be readily operated by hand or by a spring connected there-
with. It will be seen that the effect is the same as previously set forth viz., the two
bolts may be locked thus fastening the two sashes to each other and to the window
frame in a secure manner.
Having now particularly described and ascertained the nature of this invention,
and in what manner the same is to be performed, as communicated to me by my
Foreign Correspondent I declare that what I claim is,
First. A sash lock and fastener having two bolts B, D at a right angle to each
other, a dog which engages with said bolts, and a tumbler which locks said dog, the
parts being combined and operating substantially as described.
Second. A combined sash lock and fastener having a spring bolt with a second
bolt adapted to act at a right angle thereto, a dog with a nose adapted to engage and
lock said spring bolt, a tumbler operated by a key and having a lug adapted to
engage with a lug on said dog and a spring normally adapted to keep the lugs on
said dog and tumbler in engagement substantially as described.
Dated this 15th day of Santember 1887
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.