Year: 1886

page_text: Date of Application, 25th Aug., 1886.
Complete Left, 25th May, 1887.
Complete Accepted, 8th July, 1887.
I, PHILIP ALEXANDER THOMAS of Redhouse, Nashmills in the County of Hertford,
Engineer do hereby declare the nature of this invention to be as follows:-
My Invention relates to envelope machines of a kind similar to that described in
the Specification to Thompson's Patent No. 13,614 of 1884, in which the envelope
blanks are carried on the periphery of a rotating frame, while the gumming pickers
are arranged on the poriphery of a second rotating frame, so arranged relatively to
the first frame that as the two revolve in opposite directions two pickers on the one
frame, having their surfaces suitably gummed, are brought in contact with the
topmost blank on the other frame, and in gumming the flaps thereof also carry it
away from the first frame and present it to a folding box on a third frame which,
folding over the flaps removes the blank from the pickers.
According to my present improvement, I arrange the picker that gums the seal
flap in such a manner that after having been pressed upon the flap, and at the
moment when the blank is being seized by the folding box; it has a lateral move-
ment imparted to it away from the blank, so as to exercise a "wiping" action on the
gummed part, thus obviating the defect termed "ugly gumming" which is produced
when the gum is only imprinted on the flap. The said lateral movement of the picker
may be effected in various ways, thus, according to one arrangement, the picker is
pivotted to the framing and is normally held in the required position for being
improssed on the blank by a spring. On the side of the picker is a pin or projection
which, when the picker arrives opposite the folding box, comes in contact with a
projection or cam surface so that in riding over this surface the picker is caused to
turn on its pivot so as to move with its gummed end at a speed greater than that at
which the envelope blank is then moving, thus effecting the before described wiping
action on the seal flap of the blank.
I have described this action of the seal flap picker as applied in cases where the
frames that carry the blanks rotate in a continuous manner. Obviously a similar
action can be effected in cases where these frames rotate intermittently or are made to
rock or reciprocate in circular paths.

page_text: An Improvement in Envelope Machines.
I, PHILIP ALEXANDER THOMAS, of Redhouse, Nashmills in the County of Hertford,
Engineer, 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 envelope machines of a kind similar to that described in tho
Specification to Thompson's Patent No. 13,614 of 1884, in which the envelope blanks
aro carried on the periphery of a rotating frame, while the gumming pickers are
arranged on the periphery of a second rotating frame, so arranged relatively to the
first frame that as the two revolve in opposite directions two pickers on the one frame,
having their surfaces suitably gummed, are brought in contact with the topmost blank
on the other frame, and in gumming the flaps thereof also carry it away from the
first frame and present it to a folding box on a third frame which, folding over the
flaps, removes the blank from the pickers.
According to my present improvement, I arrange the picker that gums the seal flap
in such a manner that after having been pressed upon the flap, and at the moment
when the blank is being seized by the folding box, it has a lateral movement imparted
to it away from the blank, so as to exercise a "
wiping" action on the gummed part,
thus obviating the defect termed "ugly gumming" which is produced when the gum
is only imprinted on the flap. The said lateral movement of the picker may be
effected in various ways, thus, according to one arrangement, the picker is pivotted to
the framing and is normally held in the required position for being impressed on the
blank by a spring. On the side of the picker is a pin or projection which, when the
picker arrives opposite the folding box, comes in contact with a projection or cam
surface so that in riding over this surface the picker is caused to turn on its pivot so
as to move with its gummed end at a speed greater than that at which the envelope
blank is then moving, thus offecting the before described wiping action on the seal flap
of the blank.
I have described this action of the seal flap picker as applied in cases where the
frames that carry the blanks rotate in a continuous manner. Obviously a similar
action may be effected in cases where these frames rotate intermittently or are made
to rock or reciprocate in circular paths.
Fig. 1 of the accompanying drawings is a part vertical section of the threo
revolving frames employed in the envelope machino described in the Specification
No. 13614 of 1884 above referred to, and Fig. 2 is a part plan. The frame a carries,
as described in the said Specification a set of guimmers o which are stationary
relatively to the frame, but the other seal flap gummers o¹ are, according to my
invention, fixed on arms of rocking shafts o³ which are pivotted in the frame a and
which have arms carrying rollers of that revolve in a cam groove formed in a stationary

page_text: plate P. During the greater part of a revolution of the frame a, the gummers o¹
remain stationary relatively to the frame a, each of them in its turn receiving gum
and depositing it on the uppermost of the envelopes, which, receiving gum also
from the other gummer o of the pair, is picked off and carried round to be acted on
by the folding mechanism of the frame c. The cam path in P is so shaped that when
the gummer o¹is about letting go the adhering envelope, it is caused to move more
quickly in the direction of its revolution than the other gummer o and the envelope
itself are moving, and consequently instead of moving perpendicularly away from the
seal flap and taking much of the gum with it, it slides off the flap, thus having a
wiping or brushing action, whereby the flap is more thoroughly and evenly gummed.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
In a rotary envelope machine such as is described in the Specification No. 13614 of
1881 the use of seal flap gummers so mounted and operated that they are caused to
leave the envelopes with a wiping or brushing action, as and for the purpose set
forth.
ABEL & IMRAY,
Agents for the Applicant.