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Патент USA US3083998

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April 2, ‘1963
A. DE HERTELENDY
3,083,988
PERPETUAL ENGAGEMENT 'BOOK
Filed Dec. 7, 1956
IN VEN TOR.
ANDOR
r/e.
HERTEL EMD)’
fiK/M
A T TORNE Y
United States Patent U?ce
1
3,083,988
PERPETUAL ENGAGEMENT BOOK
Antler de Hertelendy, 103 Waverly Place,
New York 11, N.Y.
Filed Dec. 7, 1956, Ser. No. 627,033
2 Claims. (Cl. 281-19)
3,083,988
Patented Apr. 2, 1963
2
FIG. 6 is an illustrative ‘and perspective view showing
the manner in which the separate leaves are cleaned for
further use, and
'7
FIG. 7, is a sectional view taken on line 7—-7 of
FIG. 1.
Referring now to the ?gures, 10‘ represents a leaf formed
of paper or plastic material with a surface on which a
This invention relates to a perpetual engagement book.
pencil mark can be made and thereafter readily cleaned
It is the principal object of the present invention to
from the surface by soap and water, cleaning ?uids or
provide a perpetual engagement book in which the pages 10 simply saliva. Each of these leaves are ‘divided into
are formed with a smooth surface that can be cleaned
three spaces 111 on which the engagements may be written
after use and in which the pages have indicated thereon
and smaller spaces 12 used for indicating the appointed
the days of the month and can be turned in order through
time. Each of these leaves have two bendable hinge
three hundred and sixty degrees to bring up a new date
projections 13 and 14 separated from one another and
and to align the pages turned over for use during a 15 adapted for connecting the leaf to hinge pin '15.
These
subsequent month or other period of time.
It is another object of the invention to provide a
perpetual engagement book in which the engagements for
the current day will lie on the front page and thereby
hinge projections of the different leaves lie adjacent one
another on the hinge pin 15, so that any one of the hinge
projections for any given leaf can be readily selected from
of tongues or hinge projections and wherein these tongues
main body of sheets to lie ?ush and superimposed upon
the other projections and the leaves readily turned so that
obviating the time consumed in searching and at the same 20 the selected leaf can be made to appear quickly. The
time provide an engagement book that will have room
hinge projections are narrow and with the leaves being
for engagements over a considerable length of time.
made of paper or plastic material the projections can
It is a further object to provide a perpetual engagement
readily be formed about the hinge pin by folding, and
book in which the pages or leaves are separately hinged
gluing or heat sealing. The projections 13 and 14 are
upon a hinge pin which serves as a turning pivot by means 25 bendable as best illustrated in FIG. 5 so as to permit the
are so dimensioned and positioned that they can be easily
one another and the thickness thereof to be added up to
separated by touch from one another so as to be able to
be only slightly greater than the hinge pin and hinge
select any desired page and wherein these tongues will
projections. If the hinge connections were not bendable
bear the date mark so that the pages can be immediately 30 the ?ush engagement of the sheets with one another
turned to any particular date in the book.
would be impossible.
It is still a further object of the invention to provide
The projections 13‘ are marked with dates of the month
an engagement book constructed of pages which can be
and each leaf will have three date areas. The leaves are
turned through three hundred and sixty degrees with a
arranged chronologically and are separately hinged from
cover or stand to which the hinge pin on which the leaves 35 top to bottom so that they can be turned up in sequence.
have been assembled can be releasably attached and
A special page can be added to the assembly for mark
easily removable therefrom when turning the leaves back.
ing further engagements beyond a month’s time. All of
Another object of the invention is to provide an engage
the past engagements are supposed to be crossed out or
ment book which does away with the necessity heretofore
Washed off to leave the pages clean for writing down
experienced in such books to have to either transcribe 40 future engagements.
engagements into a new book when the old one is up or
If the owner wants to put down an engagement for
to carry two books when it is about to be up.
some future date or look up engagements already made
Still further objects of the invention are to provide a
for that date he opens the book to the desired page by
perpetual engagement book, having the above objects
holding down its tongue and lifting the pages thereover.
in mind, which is of simple construction, inexpensive to 45 The tongues or projections have identifying date numbers
manufacture, a simple hinge construction with pages
which can be easily cleaned with soap and water, cleaning
?uids, or simply with saliva, durable, compact and assum
visible at all times which as explained helps the owner to
quickly ?nd and expose the desired page.
A page of the past, normally the top page, if turned
ing only the thickness of the superimposed leaves, bend
back on the hinge pin becomes the bottom leaf. In that
able hinge connections, light in weight, effective and ef 50 position it will be available for inscribing engagements
?cient in use.
for the following month. Turning over the pages with
For a better understanding of the invention, reference
the past engagements brings a top position for the present
may be had to the following detailed description taken
day engagements.
in connection with the accompanying drawing, which
If the book is to be carried in the owner’s pocket a
illustrates an engagement book made for the period of one 55 suitable foldable cover 16 may be used for this purpose.
month and, in which
Two clips '17 and 18- may be riveted by rivets 19 to one
FIGURE 1 is a fragmentary plan view illustrating the
side of the cover. The ends of the hinge pin can be slid
manner in which the hinge pin is assembled in the cover
into position as shown in FIG. 1 under the clips 17 and
cli s,
18. The assembled pages are disconnected from the clips
£16. 2 is a fragmentary plan view showing the bend 60 when any one of the pages are to be turned back‘. The
able hinge projections and the hinge pin,
cover 16 will prevent the pocket from being soiled and
FIG. 3 is a plan view of one of the leaves separated
the written matter on the top page from‘ being removed
from the hinge pin,
or rubbed off.
FIG. 4 is a perspective rear View looking upon one
end of the assembly and illustrating the motion of the 65 Eleven leaves or pages have been shown assembled
upon the hinge pin 15, with one page serving for three
leaves as they are turned from the front through three
consecutive days and the left over or eleventh page serv
hundred and sixty degrees to the back thereof,
ing for a thirty-?rst day and for reserve space on which
FIG. 5 is an enlarged transverse sectional view showing
other matters may be listed. The number of pages of
the leaves and illustrating the manner in which the hinge
projections are bent to allow the leaves to lie ?at and 70 the book can be varied. They can be reduced if both
sides of the same leaf are to be reserved for inscriptions.
superimposed and flush upon one another, the section be
The book can be made for the period of one whole year
ing taken generally on 5-—5 of FIG. 2,
3,083,988
3
4
.
also; in that case the pages will bear the names of the
month.
It should now be apparent that there has been provided
a compact and e?icient engagement book by which the
the hinge projections of the leaves to place the openings
in single line, said leaves being turnable singly or to
gether through three hundred. and sixty degrees about the
hinge pin, said hinge projections being bent under bending
book can have continued use in that the pages can be Cl stress ‘while the leaves of the book are closed.
2. A perpetual engagement book or the like as de?ned
turned over one another through three hundred and sixty
degrees and still allowed to lie flush upon one another
to consume little space and in which the pages can be
easily cleaned and adapted for perpetual use.
in claim 1, and a book cover and laterally-spaced spring
clip retainers secured to the inner side of the cover for
releasably receiving the hinge pin whereby the pages may
While various changes may be made in the detail con 10 be released from the cover ‘to turn the pages.
struction, it should be understood that such changes shall
be within the spirit and scope of the present invention as
References Cited in the ?le of this patent
de?ned by the appended claims.
What is claimed is:
1. A perpetual engagement book or the like comprising
leaves superimposed and in ?ush face to face engagement
with one ‘another to provide a relatively thin book, each of
said leaves having longitudinally-spaced resiliently bend~
able hinge projections extending from one edge, said hinge
projections of one leaf lying adjacent to and longitudinally 20
olfset to the hinge projections of the next leaf, said hinge
projections having hinge openings at their free ends there
of, a hinge pin running through the openings of all of
UNITED STATES‘ PATENTS
756,106
Exline ______________ __ Mar. 29, 1904
1,340,140
Anthony _____________ __ May 18, 1920
1,531,330
‘1,979,475
2,463,450
2,721,556
Battle _______________ __ Mar. 31,
Knettles ______________ __ Nov. 6,
Wisner ________________ __ Mar. 1,
Zandelin _____________ __ Oct. 25,
1925
1934
1949
1955
FOREIGN PATENTS
162,299
Switzerland __________ __ Aug. 16, 1933
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