Abstract: A method and an apparatus for indicating suitable binding times for a file or files placed in a file binding apparatus. The suitable binding time is comprised of the time (t.sub.0 -t.sub.2 ; t.sub.3 -t.sub.5 ; t.sub.6 -t.sub.8) required to heat the heating plate of the binding apparatus to a predetermined maximum temperature governed by the switch-off temperature (T2) of a thermostat, and the time taken for the heating plate to cool to a similarly predetermined switch-on temperature (T1) of the thermostat, determined by a lower temperature. The suitable binding time is determined by utilizing the switch-off and switch-on temperatures of the thermostat, wherein the thermostat output signal controls an indicating device which indicates the aforesaid suitable binding time.

Abstract: A method for manufacturing booklets, each booklet comprising a cover made up of two cover sheets, a spine therebetween, and a binding agent attached to the inside of the spine, as well as a sheaf of paper inserted between the two cover sheets, one side edge of the sheaf being connected to the inside of the spine by means of the binding agent, which is activated by an activation device such that the side edge of the sheaf of paper inserted in the cover will adhere to the binding agent, characterized in that the cover (1) is parted from the activation device (9), or vice versa, by a first poweroperated transport means (44, 46, 47) so that the binding agent (5) is brought to solidify.The invention also relates to a machine for manufacturing booklets according to the above method.

Abstract: The invention relates to a method for binding sheaves of papers into covers such as to form booklets, each booklet comprising a cover made up of two cover sheets, a spine therebetween, and a binding agent attached to the inside of the spine, as well as a sheaf of papers inserted in the cover, one side edge of the sheaf being connected to the inside of the spine. The binding takes place by means of the binding agent being activated by an activation device such that the edge of the sheaf of papers will be connected to the inside of the spine via the binding agent. Each cover acts on a sensing means, which senses the presence or non-presence of indication means connected to the cover and which actuates means for influencing the further course of the method. The invention also relates to a cover provided with indication means sensed in the above described manner.

Abstract: An apparatus for determining the thickness of wads of papers (A) in connection with their binding within a cover, comprises an automatically released compressing device (2), which indicates, on a display, a required thickness value. The apparatus can be entirely mechanical, but is preferably provided with an electronic control circuit and an electric solenoid drive circuit. On insertion in a receiver (1), the wad of papers (A) actuates an electro-optical switch (D2, Q2) which energizes the solenoid (9), the armature (10) of which compresses the wad of papers (A). During the compressing movement, pulses received from two reading device (6, 13) are counted, the total number of pulses representing a measure of the required thickness value.

Abstract: In an apparatus for binding loose sheets in one or more folders there is utilized a regulating circuit means where an inserted folder (F) interrupts a light beam to a photodiode (16) which simultaneously starts a time counter (18) and closes the power supply (via 31) to the heating plate (2), wherewith the binding operation is carried out. The time interval of the timing counter is determined in response to the actual values of the width of the folders and the starting temperature of the heating plate. These values are obtained from a width detector (34, 7, 35) and a temperature detector (28), said values being fed into a microcomputer (19) controlling the timer. When the timer has counted down the time interval to zero, it interrupts the power supply to the heating plate (via 31).