Yog invented clerical roj hmab?

Ua ntej mus rau lub invention, lub staple daim nplooj ntawv fastened nrog ropes, prodernutymi los ntawm qhov nyob rau hauv lub ces kaum ntawm daim ntawv thiab kaw nrog ciab. Tus thawj chaw ua hauj lwm roj hmab twb patented nyob rau hauv ces nyob rau hauv 1866. Nws yuav ua hauj lwm nrog tsuas yog ib clip. Tab sis qhov chiv keeb ntawm cov niaj hnub roj hmab yog pom tias yuav tau tau muab siv nyob rau hauv 1868 Stitcher. Nws tau ua hauj lwm nrog cov coils ntawm hlau, uas yog noj mus rau ib tug tshwj xeeb mechanism uas muab txiav tawm thiab lub hnub curled nws. Nyob rau hauv 1905, lub American lub tuam txhab B. Jahn MFG. Co launched nws cov tseeb ntaus ntawv rau stapling daim nplooj ntawv. Rau yooj yim ntawm kev siv nyob rau hauv no ntaus ntawv ib zaug 25 khawb tau muab tso rau hauv ib tug tshwj xeeb zawj. Tom qab ntawd steel bracket glued nyob rau hauv sawb. Nyob rau hauv 1930 nws tuaj mus nrog ib tug roj hmab nrog ib tug ntxeev sab saum toj, ces koj yuav download tau tsis muaj teeb meem nyob rau hauv lub gutter nkhaus.

Sau roj hmab tam sim no

Ib tug yuav tsum rau tej chaw ua hauj lwm yog ib qho chaw ua hauj lwm roj hmab. Muaj ntau ntau hom ntawm staplers. Nyob rau hauv ib co qauv, muaj ib tug phaj nrog rau ob hom depressions. Txoj siav, lub phaj yuav khoov rau hauv lub xaus ntawm lub khawb los thiab inward mus rau txhua lwm yam, raws li tag nrho cov siv, thiab tawm, tig lub hnub nyob rau hauv opposite lus qhia. Tej tsevneeg ntawv yog siv raws li ib lub sij hawm rau brace ces yooj yim raug tshem tawm. Muaj ntau staplers muaj ib tug rear di ncauj uas yuav pab tau tshem tawm staples. Qhov no thiaj li hu ua yooj yim staple remover.

ntau yam ntawm staplers

Tag nrho cov ntawv sau staplers yuav tau muab faib mus rau hauv ob peb hom, nyob ntawm seb lawv loj thiab lawv tau:

- mini-staplers;

- Rooj staplers;

- Ob txhais tes staplers - plaery Tucker;

- phau ntawv-staplers;

- printing.

Mini staplers tau staple mus txog 10 los xij. Lawv yog cov heev compact thiab khaub-ncaws nyias. Duab staplers yog ntsug thiab kab rov tav. Yog li ntawd hais tias lawv yog ruaj khov, lawv tsis swb rau ntawm qhov chaw ntawm lub rooj thiab tsis kos nws, lawv yog haum nrog roj hmab los yog yas txhais qab xib. Duab pab kiag li lawm yuav khi ib tug loj npaum li cas naj npawb ntawm cov ntawv txheeb. Tus haib tshaj nyob rau hauv pab pawg neeg no - chaw ua hauj lwm roj hmab 100 los xij. Ib tug tshwj xeeb zoo ntawm roj hmab ua nyob rau hauv daim ntawv ntawm cov ncais - plaer. Lub npe "plaery" los ntawm cov lus Askiv lo lus pliers, lub ntsiab lus "zuam". Plaery siv qhov twg nws yog tsim nyog los khiav lub roj hmab hauv. Piv txwv li, warehouses rau fastening ntawv nrog cov hauj lwm. Tucker - ib tug haib tacker los ua ke siv los ua hauj lwm nrog cov duab los qhia thiab lwm yam tuab cov ntaub ntawv, kuj tau nyob rau hauv daim ntawv ntawm cov ncais. Stitching roj hmab hais lus rau nws tus kheej, SEWS ntawv rau fold los xij, muaj lub hloov firmware tob. Typographic roj hmab 250 yog muaj peev xwm sawv ntawm crosslinking daim ntawv, twb sawv cev rau ib tug ruaj ruaj hluav taws xob ntaus ntawv.

Xaiv cov roj hmab

Feem ntau cov feem ntau, ntawm chav kawm, koj muaj peev xwm ua tau raws li lub cev txhua yam chaw ua hauj lwm roj hmab. Nws yog tsim nyog thiab menyuam kawm ntawv, thiab chaw ua hauj lwm neeg ua hauj lwm. Yuav ua li cas mus xaiv qhov zoo tshaj plaws roj hmab los ntawm ib tug loj loj ntau yam ntawm chaw ua hauj lwm? Nqi ntawm qhov khoom yuav hais lus zoo zoo. Nws yuav tsum xyuam xim rau cov yas - nws yuav tsum yuav tus, free ntawm nicks, tusyees dawb lias. Tag nrho cov khoom yuav tsum tau zoo ruaj, tsis txhob dai tawm. Yog hais tias peb yuav ib yam dab tsi txhim khu kev qha thiab yooj yim tshaj plaws uas yuav kav ib lub sij hawm ntev.